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US Patent: 438,738
Adjustable Head for Scratch, Surface or Other Gages
Patentee:
George H. Tansley - Hartford, CT

USPTO Classifications:
33/42

Tool Categories:
layout tools : marking gauges
layout tools : measurement gauges : surface gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Charles L. Burdett
Wilbur H. Halliday
H. R. Williams
A. B. Jenkins

Patent Dates:
Applied: Mar. 31, 1890
Granted: Oct. 21, 1890

Patent Pictures:
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Description:
This is not a patent for a marking gage per se, but rather for a head locking mechanism which could be used on a marking gage. It is a fairly typical micro-adjuster design, shown as being suitable for a scratch gage, surface gage, or vernier caliper. It looks like it would work pretty well.

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