DescriptionDrafting scale, aluminum, 1376A-20 (for drafting machine) made by Keuffel & Esser Company, (Hoboken, N.J.), no date, circa 1950-1960. Machined aluminum with beveled edges marked with graduations in black; metal brackets (chuck plate) each end on top face. Overall: 18-3/4" long x 1-5/8" deep x 3/16" thick not including mounting bracket. Graduations (measuring rule): 1st edge, full size to 32nds of an inch; half size to sixteenths of an inch. 2nd edge: quarter size to eighths of an inch. Mounting bracket at each end on face for reversible mounting (end to end) on Paragon Drafting or Map Making Machine. K&E main offices and factory were in Hoboken during the period when this was manufactured.