Machinist - When precision matters 1919 - Side by Side
by Mike Savad
Title
Machinist - When precision matters 1919 - Side by Side
Artist
Mike Savad
Medium
Photograph - Colorized Photo
Description
Colorized photo from 1919
Original Title: Lapping precision gage blocks
Location: Washington DC (probably)
This is the Bureau of standards, a place where they set the stanardards of all measurements. These people are making gage blocks, a universal device used to measure the thickness of things. So you'll always know you have a precise length or thickness.
These machines are currently lapping them, bringing them to exact nominal length within 0.000005 inches. The gaging surfaces are also plane and parallel within this amount.
These drill press like machines are made by JE Snyder and Son, but I don't know the model number. I did find some drill presses from the company, one was gray, the other was a weird looking green yellow combo. I just went with my default machine color, a sort of green turquoise.
Uploaded
March 16th, 2019
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