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US Patent: 61,902
Improvement in Calipers
Patentee:
Andrew V. D. Westervelt (exact or similar names) - New Brunswick, NJ

USPTO Classifications:
33/558.06

Tool Categories:
layout tools : calipers

Assignees:
Andrew V. D. Westervelt - New Brunswick, NJ
H. Smith, Jr. - New Brunswick, NJ

Manufacturer:
Not known to have been produced

Witnesses:
Wm. F. McNamara
Alex F. Roberts
F. A. Jackson

Patent Dates:
Granted: Feb. 05, 1867

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Ralph Brendler
Description:
This design uses a worm and wheel to adjust the opening of a pair of calipers.

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