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US Patent: 1,983,516
Combined Protractor, Bevel Gauge, and Mitering Square
Patentee:
Harold Ahola (exact or similar names) - Portland, OR

USPTO Classifications:
33/419, 33/423, 33/426

Tool Categories:
layout tools : bevels
layout tools : protractors

Assignees:
Technical Tool Co. - Portland, OR

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 28, 1934
Granted: Dec. 11, 1934

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler
Description:
This tool uses a spring-loaded locking pin registering in a series of holes in the stock to accurately set an angle for the bevel. It also features a folding second arm to allow it to be used to mark the converse of the angle.

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