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US Patent: 21,435
Calipers and Dividers
Patentee:
Joseph D. Moon - Chelsea, MA

USPTO Classifications:
33/558.06

Tool Categories:
layout tools : calipers
layout tools : compasses : dividers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Hamlett Bates
E. F. Miller

Patent Dates:
Granted: Sep. 07, 1858

Patent Pictures:
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Description:
This is a screw-activated adjusment mechinism for calipers or dividers.

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