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US Patent: 66,120
Improvement in Tinner's Rules
Patentee:
Thomas Bigelow - Elkhart, IN

USPTO Classifications:
33/494

Tool Categories:
rules : rule graduations
rules : folding rules

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. H. Burridge
E. R. Waite

Patent Dates:
Granted: Jun. 25, 1867

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
Three-fold tinners rule with various scales for calculating sizes and volumes of different containers.

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