Precision Levelling Plate Part 1

In this video we start construction of our version of a Brown & Sharpe Levelling plate. This is used on the surface plate to orient parts perfectly parallel or perpendicular to the surface plate plane. Useful for flatness measuring of non parallel surfaces. I show a variety of machining and fabrication techniques and operations. The precision ground flatstones are from Robin Renzetti. Adjustment knobs are 40TPI and made from 642 Bronze. The main plate is 1018 cold rolled steel and will be carburized after machining and then precision ground on the upper surface.