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US Patent: 431,184
Plumb-Level
Patentee:
Reuben Einstein (exact or similar names) - Meadville, PA

USPTO Classifications:
33/399

Tool Categories:
layout tools : levels : inclinometers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Edwin Percy Brown
A. K. Carmichael
Geo. G. Thorpe
G. A. Fauberschmidt

Patent Dates:
Applied: Apr. 05, 1890
Granted: Jul. 01, 1890

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler
Description:
This inclinometer features several elements designed to make it more rugged and less susceptible to going out of alignment when dropped.

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