US Patent: 386,589 - Micrometer Scale


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US Patent: 386,589

Micrometer Scale

Patentee:

Edmund Jones - Cold Spring Harbor, NY

USPTO Classifications:

33/486

Tool Categories:

metalworking tools : machinist tools : measuring tools : micrometers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

G. William Totten

Annie L. Wright

Patent Dates:
Applied:	Nov. 25, 1887
Granted:	Jul. 24, 1888

Patent Pictures:

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Description:

This invention relates to an improvement in scales for measuring or plotting distances, in which fractions of the unit of the scale are determinable by means of an auxiliary movable gage having a scale for determining the extent of its movement.