Inner diameter micrometer

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Description

FIG. 1 is a front perspective view of an inner diameter micrometer showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D57932 May 1921 Scott
2356037 August 1944 Drucker
2478427 August 1949 Schmid
2604703 July 1952 Meyer
2881529 April 1959 Roch
2923064 February 1960 Rudolph
Other references
  • American Machinist, 6/16/49, block centers micrometer.
Patent History
Patent number: D252501
Type: Grant
Filed: Feb 22, 1978
Date of Patent: Jul 31, 1979
Assignee: Mitutoyo Mfg., Co., Ltd.
Inventors: Mineo Yamauchi (Kawasaki), Masao Nakahara (Kawasaki)
Primary Examiner: Nelson C. Holtje
Attorney: William L. Androlia
Application Number: 5/880,235
Classifications
Current U.S. Class: Micrometer, Caliper Or Divider Type (D10/73)
International Classification: D1004;