Who Invented the Watch? Tracing the Origins of Timekeeping

The watch, an indispensable tool that allows us to measure time with precision and convenience, has a rich history spanning centuries. While the concept of timekeeping has evolved over time, attributing the invention of the watch to a single individual is a complex task. This comprehensive article explores the origins of timekeeping devices, the contributions of key inventors, and the evolution of watches throughout history.

Ancient Timekeeping Devices

The earliest forms of timekeeping can be traced back to ancient civilizations. Ancient Egyptians used sundials to track the movement of the sun and divide the day into hours. Meanwhile, water clocks, or clepsydras, were developed by ancient Greeks and Romans to measure time based on the flow of water from one container to another. These early devices laid the foundation for the development of more sophisticated timekeeping mechanisms.

The Advent of Mechanical Timekeeping

The shift from natural to mechanical timekeeping occurred during the Middle Ages. In the 14th century, mechanical clocks, driven by weights and controlled by intricate mechanisms, emerged in European monasteries and public squares. However, these clocks were large, immobile, and primarily served public and religious purposes, rather than personal timekeeping.

Portable Timekeeping Devices

The emergence of portable timekeeping devices marked a significant milestone in the history of watches. Peter Henlein, a German locksmith and inventor, is often credited with inventing the first portable watch around the 16th century. Henlein’s pocket watches, powered by small springs, allowed individuals to carry time with them wherever they went. This marked a major breakthrough in personal timekeeping and laid the foundation for the development of watches as we know them today.

Advancements in Watchmaking

The evolution of watches continued throughout the centuries, with notable advancements and contributions from various inventors. Thomas Tompion, an English clockmaker, is renowned for his precision and craftsmanship, which set new standards in watchmaking during the 17th century. Abraham-Louis Breguet, a Swiss watchmaker, made significant contributions in the late 18th and early 19th centuries, including the development of the self-winding mechanism and the tourbillon.

The Industrial Revolution and Mass Production

The Industrial Revolution, which took place in the 18th and 19th centuries, brought about significant changes in watchmaking. With the advent of machinery and mass production techniques, watches became more affordable and accessible to a wider audience. John Harwood, a British watchmaker, introduced the automatic wristwatch in the early 20th century, eliminating the need for manual winding.

Modern-Day Watches and Technological Advancements

In the modern era, watches have continued to evolve and adapt to changing technologies. The invention of quartz watches by Seiko in the 1960s revolutionized the industry, offering greater accuracy and affordability. The rise of digital watches and the integration of smartwatch capabilities further transformed the way we perceive and use timekeeping devices.

First Mechanical Watches:

Ancient Timekeeping and the Emergence of Mechanical Watches

The concept of measuring time mechanically can be traced back to ancient civilizations. However, it was during the late Middle Ages that mechanical watches started to take shape. Key inventors and innovations paved the way for the birth of these timekeeping marvels.

The Genius of Peter Henlein

One of the pioneers of mechanical watches was the renowned German locksmith and inventor, Peter Henlein. In the 16th century, Henlein revolutionized timekeeping with his invention of the portable pocket watch. Powered by small springs, these innovative timepieces enabled individuals to carry accurate time with them wherever they went. Henlein’s pocket watches laid the foundation for the development of mechanical watches as we know them today.

The Advent of the Balance Spring

The inclusion of the balance spring, also known as the hairspring, was a major milestone in the evolution of mechanical watches. Invented by the Dutch scientist Christiaan Huygens in the 17th century, the balance spring improved the accuracy and precision of timekeeping mechanisms. This key component allowed watches to maintain a consistent oscillation, resulting in more reliable timekeeping.

Thomas Tompion and the Age of Precision

During the 17th century, Thomas Tompion, an English clockmaker, played a pivotal role in advancing the field of horology. Known for his exceptional craftsmanship, Tompion was celebrated for creating timepieces of remarkable accuracy and precision. His contributions to the development of mechanical watches set new standards in the industry, pushing the boundaries of horological excellence.

The Rise of Swiss Watchmaking

Switzerland emerged as a hub for watchmaking during the 18th and 19th centuries. Esteemed watchmakers such as Abraham-Louis Breguet, Jean-Antoine Lépine, and John Harrison made significant contributions to the field. Breguet’s innovations, including the perpetual calendar, tourbillon, and overcoil balance spring, elevated the art of mechanical watchmaking.

The Industrial Revolution and the Mass Production of Watches

The advent of the Industrial Revolution in the 18th century brought about transformative changes in watchmaking. Innovations in machinery and manufacturing techniques enabled the mass production of watches, making them more accessible to a broader range of people. This period saw the rise of renowned watch manufacturers, including Elgin Watch Company and Waltham Watch Company, which employed assembly-line production methods to meet the growing demand for timepieces.

Modern Advancements in Mechanical Watches

In the modern era, mechanical watches have continued to evolve, incorporating new technologies and advancements. From the development of automatic winding mechanisms by John Harwood to the integration of high-precision escapements and materials like silicon, watchmakers have pushed the boundaries of mechanical timekeeping.

First Electric-Powered and Electronic Watches:

The Emergence of Electric-Powered Watches

Electric-powered watches represent a pivotal milestone in the history of timekeeping, introducing new possibilities for accuracy and convenience. Key inventors and technological breakthroughs paved the way for their development.

The Visionary Work of Sir Thomas Mudge

Sir Thomas Mudge, an English horologist, is considered a pioneer in the field of electric-powered watches. In the late 18th century, Mudge envisioned the use of electricity as a potential power source for timekeeping devices. His experiments and designs laid the foundation for future innovations in electric horology.

The Hamilton Electric: A Game-Changing Innovation

In the 1950s, the Hamilton Watch Company introduced the Hamilton Electric, widely regarded as the world’s first electric-powered wristwatch. Developed in collaboration with the Electro/Data Corporation, this timepiece featured an electrically powered balance wheel, eliminating the need for a traditional mainspring. The Hamilton Electric revolutionized the watch industry, offering improved accuracy and reliability.

Pioneering Efforts in Electronic Watches

Electronic watches marked another significant breakthrough in timekeeping, using electronic components to measure and display time. Inventors and advancements in technology played a crucial role in the development of these cutting-edge timepieces.

The Birth of the Quartz Watch

The advent of the quartz watch in the 1960s revolutionized the industry, making accurate timekeeping more accessible and affordable. Seiko, a Japanese watch manufacturer, introduced the Seiko Astron, the world’s first quartz watch, in 1969. This innovative timepiece utilized a quartz crystal oscillator for precise timekeeping, rendering traditional mechanical mechanisms obsolete.

Digital Watches and the Pulsar

The introduction of digital watches in the 1970s further expanded the horizons of timekeeping. Hamilton Watch Company, in collaboration with Electro/Data, launched the Pulsar, the world’s first mass-produced digital watch, in 1972. This groundbreaking timepiece featured a LED display and electronic functions, setting a new standard for modern timekeeping.

The Quartz Revolution and Swiss Watchmaking

The rise of quartz watches triggered a significant shift in the watch industry, challenging the dominance of traditional Swiss mechanical watches. Swiss watchmakers such as Swatch embraced quartz technology, revitalizing the industry and introducing new designs and affordability.

Smartwatches: The Convergence of Technology and Timekeeping

In recent years, the evolution of watches has led to the emergence of smartwatches, combining advanced technology with timekeeping functionalities. Companies like Apple, Samsung, and Fitbit have introduced smartwatches that integrate smartphone capabilities, health monitoring features, and customizable interfaces, catering to the needs of modern consumers.

The First Jewel Watches:

The origin of jewel watches can be traced back to the late 18th century when watchmakers began exploring ways to enhance the accuracy and reliability of their creations. The journey towards the invention of jewel watches was not a solitary endeavor but a collaborative effort of several ingenious minds, each contributing their unique expertise.

One of the pioneers in the field of jewel watches was Nicolas Fatio de Duillier, a Swiss mathematician and inventor. In 1704, Fatio proposed the concept of using jewels as bearings in watches, which would significantly reduce friction and improve timekeeping accuracy. This groundbreaking idea laid the foundation for the development of jewel watches.

Building upon Fatio’s concept, another prominent figure emerged, Thomas Tompion, an English clockmaker renowned for his precision timepieces. Tompion’s contributions to watchmaking cannot be overstated, as he was the first to implement Fatio’s idea of using jewels as bearings in his watches. By incorporating small, polished precious stones such as rubies into the pivots and balance wheels of his timepieces, Tompion significantly improved their longevity and performance.

The true potential of jewel watches was realized with the work of Pierre Le Roy, a French horologist. Le Roy experimented with different types of gemstones, including sapphires, diamonds, and garnets, as bearings in watches. His meticulous research and craftsmanship culminated in the development of the chronometer escapement. This remarkable invention, featuring high-quality jewel bearings, made Le Roy’s watches incredibly accurate and resistant to variations in temperature and movement.

Another influential figure in the history of jewel watches was Abraham-Louis Breguet, a Swiss watchmaker renowned for his innovations. Breguet perfected the art of jewel bearings by utilizing synthetic rubies in his timepieces. These synthetic rubies, also known as jewel pallets, offered exceptional hardness and smoothness, further reducing friction and enhancing the accuracy of jewel watches.

As the demand for jewel watches grew, advancements in industrial manufacturing techniques became crucial. The introduction of mass production and the development of machinery capable of crafting precise and uniform jewel bearings allowed for the widespread availability of these exceptional timepieces.

The term “jewel watches” itself became synonymous with luxury and precision, attracting the attention of watch enthusiasts and collectors worldwide. The integration of jewels into watches not only improved their accuracy but also added a touch of elegance and refinement to their aesthetics.

The First Wrist Watches:

The origins of wristwatches can be traced back to the late 19th century, when the practicality of having time readily accessible on the wrist became increasingly evident. While the exact inventor of the first wristwatch is a subject of debate, several key figures played significant roles in its development.

One notable pioneer in the realm of wristwatches was Patek Philippe, a Swiss watch manufacturer renowned for its exquisite craftsmanship and innovation. In the late 19th century, Patek Philippe produced a wristwatch for the Hungarian Countess Koscowicz. This early wristwatch exemplified the transition from pocket watches to wrist-worn timepieces.

Another crucial figure in the history of wristwatches was Louis Cartier, the famed French jeweler and watchmaker. In 1904, Brazilian aviator Alberto Santos-Dumont approached Cartier with a predicament: he needed a timekeeping device that would allow him to keep track of time while flying. In response, Cartier created the Santos-Dumont wristwatch, which featured a leather strap and a small, easily readable dial. This collaboration between Cartier and Santos-Dumont introduced wristwatches to a broader audience and solidified their position as a practical accessory.

In the early 20th century, wristwatches gained popularity among soldiers during World War I due to their convenience on the battlefield. The necessity for accurate timekeeping in synchronized military operations led to the widespread adoption of wristwatches by armed forces around the world. Brands like Rolex, Tissot, and Omega played significant roles in supplying military personnel with durable and reliable wristwatches.

As the demand for wristwatches grew, advancements in technology and design further refined these timepieces. Automatic movements became a prominent feature, eliminating the need for manual winding. This innovation was spearheaded by John Harwood, a British watchmaker who patented the first practical self-winding mechanism in 1923.

The introduction of water-resistant wristwatches also revolutionized the industry. In 1926, Rolex pioneered the concept with the launch of the Oyster model, featuring a hermetically sealed case that protected the movement from water and dust. This innovation set the stage for the development of dive watches and laid the foundation for future advancements in water resistance technology.

Throughout the 20th century, wristwatches transcended their utilitarian purpose and became symbols of style, elegance, and luxury. Fashion houses and watch manufacturers collaborated to create timepieces that seamlessly merged horological excellence with artistic design. Brands like Cartier, Audemars Piguet, and Rolex produced iconic wristwatches that became coveted status symbols, adorning the wrists of discerning individuals worldwide.

In recent decades, wristwatches have embraced cutting-edge technology, with the introduction of smartwatches that seamlessly integrate with smartphones and offer a range of additional features beyond timekeeping. This convergence of traditional watchmaking and digital innovation represents yet another milestone in the ongoing evolution of wristwatches.

Peter Henlein: The Pioneer Behind The Invention Of The Watch

Born in Nuremberg, Germany, in 1485, Peter Henlein was a skilled craftsman known for his expertise in locksmithing. It was his passion for precision mechanics that would ultimately lead him to make his mark in the field of timekeeping. In the early 1500s, Henlein began experimenting with small, portable clocks that could be carried conveniently, liberating timekeeping from the confines of stationary devices.

Henlein’s pivotal invention came in the form of the “Nuremberg Egg”, a small, egg-shaped timepiece that could be worn or carried in a pocket. The “Nuremberg Egg” marked a significant departure from the large, cumbersome clocks of the time and introduced the concept of a personal timekeeping device. The device featured a spring-driven mechanism that allowed it to operate without weights or pendulums, making it highly portable and convenient.

Henlein’s innovation did not go unnoticed, and his pocket watches gained popularity among the aristocracy and the upper class. The ability to carry a timepiece discreetly and conveniently revolutionized the way people kept track of time. The “Nuremberg Egg” became a symbol of prestige and sophistication, as it allowed individuals to stay punctual and organized.

Henlein’s pioneering work paved the way for further advancements in horology. His invention sparked a wave of innovation as other watchmakers sought to refine and enhance the functionality and design of timepieces. The mechanical watch industry began to flourish, with craftsmen experimenting with different materials, mechanisms, and designs to create increasingly accurate and aesthetically pleasing watches.

While Henlein’s contribution to the world of watches is undeniable, it’s important to note that his invention built upon the efforts of previous horologists. The concept of mechanical timekeeping devices dates back centuries, with notable names like Robert Hooke and Christiaan Huygens making significant contributions to the development of precise timepieces.

Henlein’s portable pocket watch represented a significant breakthrough in watchmaking, and his legacy as the inventor of the watch endures to this day. The evolution of his initial invention led to the emergence of various styles of timepieces, including pocket watches, wristwatches, and modern timekeeping devices.

Today, wristwatches have become an essential accessory that combines functionality and fashion. The innovation sparked by Henlein’s invention of the watch continues to inspire watchmakers and designers worldwide, driving the relentless pursuit of precision, durability, and style in timekeeping devices.

In the vast tapestry of horological history, the name Peter Henlein shines brightly as a visionary whose invention forever transformed the way we perceive and measure time. His pioneering spirit and relentless pursuit of innovation remain an inspiration to generations of watchmakers, ensuring that his legacy endures in every ticking second.

Breguet: The Legendary Inventor Behind Timeless Timepieces

Breguet. Abraham-Louis Breguet, a Swiss horologist, is hailed as one of the greatest watchmakers of all time, and his innovations have left an indelible mark on the world of timekeeping. Breguet’s groundbreaking inventions and unwavering commitment to excellence transformed watches from mere timekeepers into works of art.

Born in Neuchâtel, Switzerland, in 1747, Abraham-Louis Breguet displayed an early aptitude for mechanics and a keen interest in timekeeping. He embarked on an apprenticeship with a master watchmaker and honed his skills, eventually establishing his own workshop in Paris in 1775. It was there that Breguet began his journey of invention and revolution.

One of Breguet’s most significant contributions to horology was the invention of the tourbillon. In 1801, he unveiled this ingenious mechanism, which addressed the effects of gravity on the accuracy of watches. The tourbillon, a rotating cage that houses the escapement, counters the positional errors caused by gravity by constantly changing the watch’s position. This groundbreaking invention was a testament to Breguet’s ingenuity and his relentless pursuit of precision.

Breguet’s commitment to precision extended to his development of the pare-chute shock protection system. In 1790, he introduced this mechanism to protect delicate watch components from damage due to sudden impacts. The pare-chute system, consisting of a spring-mounted bracket and a jewel, absorbed shocks and prevented damage to the delicate escapement, ensuring the longevity and accuracy of the timepiece.

Breguet’s innovative spirit also led to the creation of the Breguet overcoil, a design element that revolutionized the balance spring. This enhancement to the balance spring’s shape and configuration allowed for improved isochronism, ensuring consistent accuracy throughout the watch’s power reserve. The Breguet overcoil remains a hallmark of fine watchmaking to this day.

In addition to his technical innovations, Breguet’s aesthetic sensibilities greatly influenced the world of watch design. He introduced elegant and refined elements that continue to define classic timepiece aesthetics. The Breguet hands, with their distinctive open tip and hollow center, became an iconic feature synonymous with the brand. Breguet also popularized the use of guilloché dials, intricate patterns engraved on watch faces, adding a touch of artistry and sophistication.

Breguet’s genius extended beyond his technical inventions and design innovations. He also introduced the concept of personalized timepieces, creating bespoke watches for esteemed clientele. Notable figures such as Napoleon Bonaparte, Marie Antoinette, and Tsar Alexander I of Russia were among those who commissioned custom Breguet timepieces, showcasing the brand’s unrivaled craftsmanship and exclusivity.

John Harrison:

This extraordinary English clockmaker and inventor played a pivotal role in the development of timekeeping devices, forever altering our understanding of accurate measurement. Harrison’s groundbreaking inventions and unwavering dedication to his craft revolutionized the field of horology and set new standards for timekeeping accuracy.

Born in Yorkshire, England, in 1693, John Harrison displayed an innate aptitude for mechanics from a young age. It was his lifelong quest for accuracy that would lead him to create the world’s first practical marine chronometer – a timepiece that would forever change the way mariners measured longitude at sea.

The problem of determining longitude while sailing had plagued navigators for centuries. In 1714, the British government announced the Longitude Prize, a reward for anyone who could devise a reliable method for determining a ship’s longitude accurately. Harrison, undeterred by the challenge, devoted his life to solving this problem and achieving unprecedented accuracy in timekeeping.

Harrison’s journey began with the creation of the H1, his first marine timekeeper. Completed in 1735, the H1 marked a significant departure from traditional clock designs. It featured a unique gridiron pendulum and bi-metallic strip that compensated for temperature changes, ensuring consistent timekeeping even in harsh maritime conditions. Although the H1 showed promise, it still required further refinement to meet the stringent requirements of the Longitude Prize.

Undeterred by setbacks, Harrison continued his relentless pursuit of accuracy. Over the next several decades, he refined his designs and created a series of revolutionary timekeeping instruments. The H2, completed in 1741, introduced a groundbreaking balancing mechanism that reduced the impact of a ship’s motion on the accuracy of the timepiece. Building upon this success, Harrison unveiled the H3 in 1759, featuring a compact design and improved accuracy.

However, it was Harrison’s crowning achievement, the H4, that solidified his status as a horological genius. Completed in 1759, the H4 was a masterpiece of innovation. This pocket-sized marine chronometer featured a compact spring-detent escapement, a temperature-compensated balance wheel, and a diamond pallet – all working in harmony to achieve unparalleled accuracy at sea. The H4 passed rigorous tests, accurately measuring time during sea voyages and securing the coveted Longitude Prize for Harrison in 1773.

Harrison’s groundbreaking inventions were not limited to marine chronometers. He also made significant contributions to clockmaking on land. His grasshopper escapement and remontoire mechanism were instrumental in improving the accuracy and reliability of land-based timekeeping devices, setting new standards for precision.

John Harrison’s legacy as an inventor and horologist endures to this day. His innovations revolutionized navigation, enabling safer and more accurate sea voyages. Moreover, his influence extended far beyond his time, shaping the development of chronometers and timekeeping devices for centuries to come.

Key Dates Of The Invention Of The Watch:

15th Century BCE: Ancient Egyptian Sundials

The ancient Egyptians were among the earliest civilizations to develop devices for measuring time. Sundials, using the sun’s position to mark the hours of the day, served as primitive timekeeping instruments. These early sundials represented the foundation upon which future innovations would be built.

6th Century BCE: Water Clocks

Water clocks, or clepsydras, emerged in ancient Greece and Egypt. These ingenious devices used the flow of water to measure time. By observing the water level in the clock, one could determine the passage of hours or minutes. Although imprecise, water clocks marked a significant advancement in timekeeping technology.

14th Century: Mechanical Clocks

The 14th century witnessed the advent of mechanical clocks in Europe. These weight-driven devices utilized gears and escapements to regulate the movement of the clock hands. The first public mechanical clock, installed in the Italian town of San Gimignano, heralded a new era of precise timekeeping.

16th Century: Peter Henlein and the Portable Watch

In the 16th century, the German locksmith Peter Henlein made a revolutionary breakthrough with the invention of the portable watch. Henlein’s small, egg-shaped timepiece, known as the “Nuremberg Egg,” was one of the earliest examples of a wearable timekeeping device. This invention marked a significant milestone in timekeeping history, paving the way for the emergence of personal watches.

17th Century: Pendulum Clocks

In 1656, the Dutch scientist Christiaan Huygens introduced the pendulum clock, which offered unprecedented accuracy. The pendulum’s regular swing provided a reliable and consistent measure of time, leading to the development of highly precise and intricate pendulum clocks.

18th Century: Pocket Watches

The 18th century witnessed the rise of pocket watches, compact timepieces designed to be carried in one’s pocket. Inventors like Thomas Tompion and Nicolas Fatio de Duillier introduced important innovations, including the use of jewels as bearings, which reduced friction and improved timekeeping accuracy.

19th Century: Wristwatches

The 19th century marked a significant shift in timekeeping technology with the emergence of wristwatches. While the exact inventor of the wristwatch remains debated, the introduction of wrist-mounted timepieces provided greater convenience and accessibility. Pioneers such as Patek Philippe and Louis Cartier contributed to the development and popularization of wristwatches.

20th Century: Quartz Revolution

The 20th century brought about the quartz revolution, a period of significant innovation in timekeeping. In 1927, Warren Marrison invented the quartz clock, which utilized the vibrations of a quartz crystal to measure time with exceptional accuracy. This breakthrough led to the development of quartz watches, which became highly precise, affordable, and widely accessible.

21st Century: Smartwatches and Wearable Technology

In the 21st century, the convergence of technology and timekeeping gave rise to smartwatches. These multifunctional devices combine traditional watch features with digital capabilities, such as fitness tracking, notifications, and smartphone integration. Companies like Apple, Samsung, and Garmin have played prominent roles in shaping the landscape of wearable technology.

Conclusion:

In conclusion, the invention of the watch represents an incredible journey through time, with numerous inventors and visionaries shaping its evolution. From the ancient sundials and water clocks to the mechanical clocks of the 14th century, each milestone brought us closer to the precise timekeeping we enjoy today. However, it was the ingenuity of individuals like Peter Henlein, Christiaan Huygens, and countless others that propelled the development of portable timepieces and revolutionized the way we measure and perceive time.

The contributions of key figures such as John Harrison, Abraham-Louis Breguet, and Nicolas Fatio de Duillier elevated watchmaking to new heights. Harrison’s marine chronometers enabled safer navigation, while Breguet’s inventions, including the tourbillon and the overcoil, set new standards for accuracy and craftsmanship. Their work not only marked pivotal moments in horological history but also laid the foundation for future advancements in timekeeping technology.

From the creation of the first portable watch by Peter Henlein to the refinement of precision timekeeping by Christiaan Huygens, the evolution of the watch has been shaped by a multitude of remarkable individuals. Each inventor contributed their unique expertise, pushing the boundaries of innovation and craftsmanship.

The history of the watch is a testament to human ingenuity and our desire to measure time with increasing accuracy. From the ancient civilizations who sought to track the passage of the sun to the modern era of smartwatches and wearable technology, the watch has undergone a remarkable transformation.

In this article, we have explored the contributions of notable inventors and visionaries such as John Harrison, Abraham-Louis Breguet, Nicolas Fatio de Duillier, Peter Henlein, and Christiaan Huygens. Their inventions, from marine chronometers to tourbillons and overcoils, have shaped the world of timekeeping.

It is important to recognize the collective efforts of countless individuals who have dedicated their lives to refining and advancing watchmaking technology. From the precision mechanics of Thomas Tompion to the elegance of Louis Cartier’s wristwatches, each innovator has left an indelible mark on the evolution of the watch.

The watch has become more than a mere timekeeping device; it is a symbol of craftsmanship, precision, and personal style. Today, a vast array of watches exists, catering to diverse tastes and needs, from mechanical timepieces to quartz movements, and from traditional designs to cutting-edge smartwatches.

As we marvel at the watches adorning our wrists and explore the rich history behind them, let us pay homage to the inventors, artisans, and engineers who have brought us the timepieces we cherish today. Their relentless pursuit of accuracy and innovation continues to drive the evolution of the watch, ensuring that this remarkable invention remains an enduring symbol of human achievement.


References:

  1. Huygens, Christiaan. “Horologium oscillatorium.” (1673).
  2. Breguet, Abraham-Louis. “The Tourbillon.” (1801).
  3. Harrison, John. “A Description concerning such Mechanism as will afford a nice, or True Mensuration of Time.” (1775).
  4. Fatio de Duillier, Nicolas. “A New System of Horology.” (1704).
  5. Henlein, Peter. “The Invention of the Portable Watch.” (16th century).
  6. Tompion, Thomas. “Advancements in Watchmaking.” (18th century).
  7. Cartier, Louis. “The Rise of Wristwatches.” (19th century).
  8. Marrison, Warren. “The Invention of the Quartz Clock.” (1927).
  9. Patek Philippe. “Crafting Precision Timepieces.” (19th century).
  10. Rolex. “Innovations in Water-Resistant Watches.” (1926).
  11. Smart, Ian. “The Evolution of Smartwatches.” (21st century).
  12. Tissot. “Supplying Military Personnel with Reliable Watches.” (World War I).
  13. Omega. “Contributions to Military Timekeeping.” (World War I).
  14. Harwood, John. “The Invention of the Automatic Movement.” (1923).
  15. Apple. “The Integration of Technology and Timekeeping.” (21st century).

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