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US Patent: 1,799,739
Precision measuring device
Patentees:
Carl G. Schiele - Cincinnati, OH
John B. Elfring - Cincinnati, OH

USPTO Classifications:
33/412

Tool Categories:
metalworking tools : machinist tools : measuring tools

Assignees:
Cincinnati Grinders, Inc. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 13, 1926
Granted: Apr. 07, 1931

Patent Pictures:
USPTO pdf tiff
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Description:
"The principal object of the present invention is the provision of a novel mechanism for accurately determining the correctness of the guide ways on the bed of a milling machine, grinding machine or like machine tool."

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