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US Patent: 9,722
Pendulum Level
Patentee:
Thomas A. Chandler - Rockford, IL

USPTO Classifications:
126/1, 33/391

Tool Categories:
layout tools : levels : inclinometers
layout tools : levels : pendulum levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
P. H. Watson
John L. Smith

Patent Dates:
Granted: May 17, 1853

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
This is a fairly traditional inclinometer design, with a special method of holding the pendulum to reduce friction.

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