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BG372241214 I brought out a better tool to check the gage blocks. Also cleaned anvil and base. It turned out that the sub um tolerances were VERY narrow. Difference between 50 and 20 30 mm combination is actually around 0.30 micrometers. Or 30 nanometers. A tiny fraction of wavelength of red (Na) light. Next step is to get myself a high quality optical flat and look at the moirée pattern. Ridiculous? Yes, but intriguing.

BG372241214 19/11/2020
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Forfend https://www.banggood.com/20253035mm-Bore-Diameter-Pillow-Block-Mounted-Bearings-Zinc-Alloy-Ball-Bearings-p-1055267.html?rmmds=detail-left-hotproducts__1&ID=3583&cur_warehouse=CN

2020-10-29 10:25:22 Helpful (0)
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