Patent Model - Improvement in Combined Rules, Squares, and Bevels

Maker and role
Cassius Heffron, Patentee
 Production date
Apr 22 1873
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Object detail

Media/Materials
Wood, iron
Measurements
1 x 14 3/4 x 8" (2.5 x 37.5 x 20.3cm)
Description
Heffron's patent when produced as he describes "can be folded for pocket use...; extended in a straight length to form a rule,...; set at right angles to form a square...; or set up at any desired angle to form a bevel..." (Patent Number 138,152)
Collection
Rothschild Patent Model Collection
Object number
2015.14.1563a-c
Currently on display?
No
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