US Patent: 51,609 - Rolling Ruler


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US Patent: 51,609

Ruler
Rolling Ruler

Patentee:

David Munson (exact or similar names) - Indianapolis, IN

USPTO Classifications:

33/448

Tool Categories:

rules

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

A. G. Porter

O. F. Mayhew

Patent Dates:
Granted:	Dec. 19, 1865

Patent Pictures:

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Description:

David Munson is back with an improvement to his rolling ruler (#42,012 - March 22, 1864). The improvements are mainly in the manufacturing, and to make it less liable to bend.