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US Patent: 857,600
Paper-Hanger's Tool
Paper-Hanger's Plumb Level
Patentee:
William U. Colthar (exact or similar names) - Springfield, OH

USPTO Classifications:
33/384

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. O. Hagen
Irvine Miller
William F. Bauer

Patent Dates:
Applied: Aug. 06, 1905
Granted: Jun. 25, 1907

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler
Description:
This is a typical paper-hanger's straightedge, with the addition of a level to determine if the edge is plumb. The level vial could also be rotated, allowing the tool to be used as a really long level.

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