Mechanical timekeeping is one of humanity's great achievements: a marriage of precision engineering, craftsmanship and scientific understanding that has been refined for roughly seven centuries.
From tower clocks to the pocket
The first mechanical clocks appeared in the towers of Italian cities in the first half of the 14th century. They were driven by falling weights and regulated by a verge-and-foliot escapement, a simple mechanism whose rate depended heavily on the driving force and friction. By around 1500, makers had learned to replace the heavy weights with a coiled mainspring, which made smaller, portable clocks and the first watches possible.
The great leap in accuracy came in the 17th century. In 1656 the Dutch scientist Christiaan Huygens built the first pendulum clock, cutting errors from many minutes a day to under a minute. Around 1675 he applied the same principle to portable timepieces with the balance spring, the hairspring that still regulates mechanical watches today.
The heart of the machine
Every mechanical timepiece shares the same basic architecture. A power source, a mainspring or weight, stores energy. A gear train carries that energy toward the hands. The escapement releases it in small, equal steps, and an oscillator, a pendulum or a balance wheel with its spring, sets the rhythm of those steps. The steady tick you hear is the escapement locking and unlocking, many times each second.
Why it still matters
Why do people still treasure mechanical watches and clocks in an age of atomic time and smartphones? Part of the answer is the tangible connection to craftsmanship. A mechanical movement is built, finished and adjusted by skilled hands, and it can be serviced and kept running for generations.
For members of RIHOSO, the fascination is both intellectual and emotional. We gather not just to admire these machines but to understand them: to learn the language of horology and to appreciate the generations of innovation that brought us from tower clocks to wristwatch movements only a few millimetres thick.