US Patent: 857,991
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Combined Level and Plumb
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Patentee:
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William A. Gibson (exact or similar names) - Enid, OK |
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Patent Dates:
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Applied: |
Aug. 06, 1906 |
Granted: |
Jun. 25, 1907 |
Patent Pictures:
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USPTO (New site tip) Google Patents
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Ralph Brendler
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Description: |
This simple inclinometer features an unusual adjustment mechanism, and a pendulum unit that may be easily removed or replaced.
Production pieces were marked with the manufacturer's name and patent date on the metal plate. |
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