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US Patent: 32,410
Calipers
Patentee:
J. H. Call - Springfield, MA

USPTO Classifications:
33/558.1

Tool Categories:
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Edmund Case
Milton Bradley

Patent Dates:
Granted: May 28, 1861

Patent Pictures:
USPTO pdf tiff
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Description:
This caliper uses a combination of a thumbscrew-set quadrant for fast setting, with a micrometer screw for fine adjustment.

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