Technical supply co., Scranton. [from old catalog] · Scranton, Pa., Technical supply co · leaf 188
f^ ■1% DRAFTSMANS PROTRACTOR … 1862 This Protractor is made from sheet steel and has a blade 8^ inches long.The graduations read to degrees and the vernier reads to 5 minutes. Thereare no projections on either face of the Protractor, and consequently it canbe used on either edge of the blade or either side up. This makes it…
Engineering instruments · Drawing instruments
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