Alvin Tru-Angle 6″ Adjustable Triangle


Accession Number: 1998.56

Description: Clear plastic protractor/adjustable triangle, adapted with braille on brown Dymo-tape brown labels; black thumb screw secures angle; printed label, "ALVIN TRU-ANGLE".

Height: 5.125

Width: 6

Date Made: ca. 1955

Credit Line: Gift of Elmer Eveland, 1998.56

Subjects: Protractors Mathematics Instructional aids, tools, and supplies

Dimension Notes: overall

Material: Plastic, aluminum

Updated: 07/27/2015