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US Patent: 101,477
Improvement in Combined Square, Protractor, Level, & c.
Patentee:
J. A. Littlefield - Randolph, MA

USPTO Classifications:
33/342, 33/343, 33/495

Tool Categories:
layout tools : squares
layout tools : bevels
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Frank Morton
N. E. Buck

Patent Dates:
Applied: Jul. 27, 1869
Granted: Apr. 05, 1870

Patent Pictures:
USPTO pdf tiff
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Description:
Identified as a compound tool adapted to machinist use in planing and finishing nuts, &c.

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