Accession Number: 2007.29.22
Description: Stamped rectangular aluminum plates, stamped with dotted gradations at .25" intervals, whole inches numbered in braille; hinged in middle with piano hinge secured with hand finished rivets.
Maker: Howe Press
Place of Origin: Watertown, MA
Collection: APH Collection
History/Provenance: APH Collection
Credit Line: APH Collection, 2007.29.
Subjects: Rulers (Instruments). Measuring. Instructional aids, tools, and supplies.
Dimension Notes: overall, open
Made: Howe Press