US Patent: 248,162 - Combined Calipers and Rule


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

US Patent: 248,162

Combined Calipers and Rule

Patentee:

Peter D. Graham (exact or similar names) - Black Hawk, CO

USPTO Classifications:

33/558.01

Tool Categories:

layout tools : compasses : trammels

layout tools : calipers

layout tools : measurement gauges

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Mar. 05, 1881
Granted:	Oct. 11, 1881

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler

Description:

This is a really unusual combination tool. It consists of two sets of calipers, each with a sharp point on the back, mounted on a rule such that the entire apparatus may be used as a beam compass.Just to make it interesting, there is another reference face to allow it to be used as a measuring gauge.

It seems like all of the tools would interfere with each other, making none of them particularly useful.