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US Patent: 108,799
Improvement in Dividers and Calipers
Patentee:
George W. Lane (exact or similar names) - Plantsville, CT

USPTO Classifications:
33/558.05

Tool Categories:
layout tools : calipers
layout tools : compasses

Assignees:
George W. Lane - Plantsville, CT
Elisha R. Newell - Plantsville, CT

Manufacturer:
Not known to have been produced

Witnesses:
Simeon H. Norton
Joseph K. Shepard
Edwin Spring
Patent Dates:
Granted: Nov. 01, 1870

Patent Pictures:
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Report data errors or omissions to steward Ralph Brendler
Description:
This design uses a slotted disk to hold one leg, and a fine screw to allow micro-adjustment of the other.

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