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US Patent: 785,581
Level
Patentee:
Alvertus V. Shorts - Allegheny, PA

USPTO Classifications:
33/381, 33/387

Tool Categories:
layout tools : levels : level adjustments
layout tools : levels

Assignees:
None

Manufacturer:
W. H. Hill - Cambridge Springs, PA

Witnesses:
H. C. Evert
K. H. Butler

Patent Dates:
Applied: Apr. 06, 1904
Granted: Mar. 21, 1905

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
Four levels are housed in one annular frame that can be rotated by use of a worm gear. Casing is provided with degree markings to allow any angle desired to be set.

Known example is marked A. V. SHORTS/PAT'D. MAR.21.05/TOWNVILLE, PA. and W.H.HILL/MANFR.CAMBRIDGE SPRINGS,PA.

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