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US Patent: 60,788
Improvement in Levels
Sighting Level
Patentee:
William L. Richardson - Reading, MA

USPTO Classifications:
33/292, 33/386

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George W. Bliss
Louis C. Rodier
Edward H. Hyde
J. B. Gardiner

Patent Dates:
Granted: Jan. 01, 1867

Patent Pictures:
USPTO pdf tiff
Google Patents
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Description:
This is a design for a sighting level, such as used by masons and builders.

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