This is Wringing Gauge Blocks | Titans of CNC Machining

Wringing Gauge Blocks: two blocks of metal (not magnets!) will stick together by a process called wringing if their surfaces are flat to high precision- such as these gauge blocks found in most machine shops. Here two blocks are forced apart with a snap, and then wrung back together with the characteristic sliding motion technique. Gauge blocks are flat to less that one millionth of a meter and are used by machinists for precision length measurements and calibration. The science of the wring for

Using a gage block stack up to measure the width of a slot or keyway. For anyone who feels inclined to comment about how I’m scratching them, you have a set of blocks that’s used in the shop and a set of blocks that you keep for the inspection and setup work. I’ve used mine for years and I’ve never damaged them to where they would not wring together. Easiest way to measure the width of keyways down to tenths. #abom79 #gageblocks #keyway #machinisttools #precisiontools #machineshop #machining | A