The HIDDEN Screws of PRECISION

Please support me on Patreon website Screws - The Early Years Perfect Timing (with the Marble Machine X) World's Oldest Micrometer - 1776! Who made this thing?? Textured Watt Micrometer 3D model (JuanG3d) Some blender background footage is from “The Great Drawing Room“ courtesy of the The Hallwyl Museum in Sweden Palmer Micrometer photos (black background) Courtesy of the Wm. R. Robertson collection How to read a micrometer Tom at oxtoolco My viewers and I owe a debt to all of my supporters on Patreon, including the generous people at the top two tiers: Adrian Van Allen Cam Cy 'kkm' K'Nelson Elliott Wade H Peter Doble HereThereRainbows History4Real Jared Jeanotte John & Becki Johnston anonymous NB Nevin Spoljaric Paul C Whalen Paul Cleary Scott Roland Steve Crognale