US Patent: 45,529 - Improvement in Calipers


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


Quick search:	Patent number:	Patent Date:

US Patent: 45,529

Improvement in Calipers

Patentee:

Robert D.O. Smith (exact or similar names) - Washington, DC

USPTO Classifications:

33/801

Tool Categories:

layout tools : calipers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

P. J. Dodge

W. C. Dodge

Andrew Whiteley

Patent Dates:
Granted:	Dec. 20, 1864

Patent Pictures:

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

Description:

This is a caliper with two attached scales: one for reading inside dimensions and one for reading outside dimensions. The dimension can be read directly by using the zero point of the other scale.