US Patent: 66,946 - Improvement in Trial Squares


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US Patent: 66,946

Improvement in Trial Squares

Patentees:

John Burt (exact or similar names) - Sturgis, MI

A. M. Miller (exact or similar names) - Sturgis, MI

USPTO Classifications:

33/480, 33/561.1

Tool Categories:

layout tools : squares : try squares

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

John B. Jacobs

Macey Tobey

Patent Dates:
Granted:	Jul. 23, 1867

Patent Pictures:

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Description:

A try square specifically designed to check the square of a low surface. This patent utilizes a double blade system with a traditional blade, and smaller, multiple pieces that are slotted and square to the main blade which highlight an out of square piece.