A New York City watch manufacturer, making clocks for airplanes, is seeking automatic screw machine facilities for the manufacture of twenty-thousand to thirty-thousand small clock gears. Material: high carbon steel, oil hardened. Dimentsions: O.D. .3685 inches; diameter at base of teeth. .3355 inches; Thirty-six teeth, depth, .0165 inches; thickness, .046 inches; diameter center hole, .1 inches
Summary
Public domain photograph related to New York City, free to use, no copyright restrictions image - Picryl description
Tags
Date
01/01/1941
Contributors
Gruber, Edward, photographer
Location
Source
Library of Congress
Copyright info
Public Domain