Jon and Chris follow up on a few projects discussed over the last few years, and take a deep dive into the details of free-sprung movements.

• “Beginners acutely feel the struggles of other beginners” Tatiana Mac on why beginners should teach
• Watchmaking by George Daniels
• Dean DK YouTube Channel
• USB C Unicorn Jon took North’s AR glasses for a spin back in Episode 38
• Google Acquires North, makers of Focals AR glasses
• Focals by North
• Myo Armband A gesture control armband made by North (then known as Thalmic Labs) prior to their AR glasses
• Mudra Band A gesture control strap for the Apple Watch
• Back Tap A new accessibility in iOS 14
• Braille Keyboard A video demonstration of Apple’s braille keyboard for iOS
• Luc Monnet One of the watchmakers behind the SPEMT project that Chris & Jon discussed last episode
• Cyril Brivet-Naudot Another of the key watchmakers behind the SPEMT project that Chris & Jon discussed last episode
• SPEMT A collaborative watchmaking project Chris & Jon discussed last episode
• AP Escapement A new take on a Robin style escapement released by Audemars Piguet a number of years ago
• Coaxial Escapement
• Craig & Rebecca Struthers on Minutia Repeater
• Equation of Time
• Krayon Anywhere A novel take on a mechanical sunrise & sunset complication




The watchmaker-adjustable cam in the Krayon Anywhere
• Krayon Everywhere Jon & Chris chatted about the Krayon Everywhere back in episode 14
• The Horizon Clock by Rosie Kirk
• Jantar Mantar, Jaipur A collection of nineteen architectural astronomical instruments, including the world’s largest sundial
• Seiko 9SA5 A new Grand Seiko caliber with free-sprung balance, dual barrels, new escapement, & thoughtful movement architecture
• Grand Seiko’s Studio Shizukuishi Opens its Doors
• Making Waves in a Bad Way Fratello’s coverage of Bonhams’ Making Waves Seiko Watch Auction fiasco
• Rare Apple Watch Bands
• Seiko 5718-8000 made for the 1964 Tokyo Olympics
• A Complete Guide to the Regulating Organ Monochrome Watches spells out some of the differences between a free-sprung balance wheel vs. a pin-regulated balance wheel