Combination Rule, Square, and Miter.
Description:
Patent for a combination of devices that contains "attachments for folding rules which will make said rules capable of use as a square, tri-square, and miter" (lines 15-17), including instructions and illustrations.
Date:
August 4, 1914
Creator:
McFarland, Charles M.
Item Type:
Refine your search to only
Patent
Partner:
UNT Libraries Government Documents Department