1) A 4" brass semicircular protractor, divided to single degrees and numbered by tens in both directions from 10 to 180. It is marked: Butterfield AParis. 2) A 6-3/4" brass folding combination set ...
Drawing instruments have been essential to mathematics, architecture, surveying, navigation, engineering design, and other technical endeavors from antiquity through the 20th century, although ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results