US Patent: 1,435,630


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Calipers

Patentees:

Edward Cichey (exact or similar names) - Chicago, IL

Rudolf Pesek (exact or similar names) - Chicago, IL

USPTO Classifications:

33/501.5

Tool Categories:

layout tools : calipers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Nov. 12, 1920
Granted:	Nov. 14, 1922

Patent Pictures:

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Description:

This patent adds a small indicator arm to the end of one leg of a pair of calipers, so that it will visually indicate when a part being measured is out of tolerance.