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US Patent: 378,928
Combination Ruler
Patentee:
Herman Goldsmith - Brooklyn, NY

USPTO Classifications:
206/214, 33/485, 43/54.1

Tool Categories:
rules

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
R. T. Van Boskerck
Charles G. Coe
C. W. Benjamin

Patent Dates:
Applied: Apr. 30, 1887
Granted: Mar. 06, 1888

Patent Pictures:
USPTO pdf tiff
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Description:
This is a simple metal ruler attached to a circular tube. The tube has removable plugs in each end to allow it to be used for pen storage, and a secondary base is provided to support the ruler off the paper to prevent blotting.

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