Accession Number: 1993.26
Description: Clear plastic 180 degree #376 C-Thru Ruler Company protractor, scaled in both directions 0-180 in print; one raised dot at 5 degree increments, two raised dots at 10 degree increments, and three raised dots at 0, 45, 90, 135, and 180; 4" ruler on bottom; clear plastic pointer bolted to middle of ruled lower edge with machine screw and leather washer; screen printed, "C THRU RULER COMPANY/Hartford Conn U.S.A./No. 376.
Date Made: ca. 1950
Place of Origin: Hartford, CT
Credit Line: Gift of Elmer Eveland, 1993.26
Subjects: Geometry Instructional aids, tools, and supplies Measuring
Dimension Notes: overall
Made: C-Thru Ruler Company