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US Patent: 1,003,863
Listing Indicator
Patentee:
Joseph Arnet - Chicago, IL

USPTO Classifications:
33/395

Tool Categories:
layout tools : levels : pendulum levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Geo. J. Kunter
Frank D. Heaslys
G. Robert Thomas
E. Murdock

Patent Dates:
Applied: Feb. 06, 1911
Granted: Sep. 19, 1911

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
This is a simple pendulum level designed for use in a boat or airplane to determine the angle of listing in two perpendicular dimensions.

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