US Patent: 1,579,197 - Protractor Attachment for Squares


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US Patent: 1,579,197

Protractor Attachment for Squares

Patentee:

James Wesley Dunham (exact or similar names) - Burnaby, BC Canada

USPTO Classifications:

33/426

Tool Categories:

layout tools : squares

layout tools : bevels

layout tools : protractors

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Apr. 29, 1925
Granted:	Mar. 30, 1926

Patent Pictures:

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Description:

This design covers a secondary pivoting face that can be attached to the stock of a standard try-square, allowing it to be used for measuting and marking angles.