The simplest solution is often the best solution. Jon and Chris touch on the history of timekeeping and then dive into a discuss about the variables that play into precision, mechanical timekeeping.

Full visual show notes available at http://offhours.show/ep16

• Samrat Yantra A massive equinoctial sundial in Jaipur, India

• Dolphin Dial Jon’s favourite example of a sundial, located in Greenwich, England

• Wadokei A wadokei wristwatch created by Japanese watchmaker, Masahiro Kikuno, wherein the length of the hours change according to the time of year

• Christiaan Huygens Inventor of the pendulum clock & early, portable timepieces that employed hairsprings & balance wheels as their regulators

• Robert Hooke In addition to Huygens, Hooke is also credited with bringing hairsprings to the craft of watchmaking

• Charles Édouard Guillaume Invented several alloys that are effectively impervious to changes in temperature, dubbed invar & elinvar

• Abraham-Louis Breguet Creator of the Breguet Overcoil, a form of hairspring that helped to mitigate positional error & improve the performance of mechanical watches