GB174275A - Improvements in or relating to micrometer gauges - Google Patents

Improvements in or relating to micrometer gauges

Info

Publication number
GB174275A
GB174275A GB3515420A GB3515420A GB174275A GB 174275 A GB174275 A GB 174275A GB 3515420 A GB3515420 A GB 3515420A GB 3515420 A GB3515420 A GB 3515420A GB 174275 A GB174275 A GB 174275A
Authority
GB
United Kingdom
Prior art keywords
inch
marked
division
scale
64ths
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3515420A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FERNAND FRANCIS COMPAGNON
HENRI TARDY
Original Assignee
FERNAND FRANCIS COMPAGNON
HENRI TARDY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FERNAND FRANCIS COMPAGNON, HENRI TARDY filed Critical FERNAND FRANCIS COMPAGNON
Priority to GB3515420A priority Critical patent/GB174275A/en
Publication of GB174275A publication Critical patent/GB174275A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/18—Micrometers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

174,275. Compagnon, F. F., and Tardy, H. Dec. 14, 1920. Dials and scales.-Relates to micrometer screw gauges of ordinary type reading in decimals and consists in providing additional scales to read in fractions, which are the sub-divisions of 8ths down to 64ths of an inch. The screw spindle has forty threads to the inch, and the barrel is marked with a decimal scale a every fourth division of which corresponds to an anvil movement of a 10th of an inch as usual. Each fifth division of this scale is extended on the opposite side of the line e to represent a scale of 8ths of an inch, and the rotary head c is provided with eight equidistant lines g to represent all the 64ths occurring in each eighth of an inch. Each division line is marked with the denominator and with all the numerators of the fractions which it represents. Instead of these markings the lines may be marked with the corresponding symbols as shown in Fig. 4, the thick line representing the position the particular fraction occupies within each 8th of an inch.
GB3515420A 1920-12-14 1920-12-14 Improvements in or relating to micrometer gauges Expired GB174275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3515420A GB174275A (en) 1920-12-14 1920-12-14 Improvements in or relating to micrometer gauges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3515420A GB174275A (en) 1920-12-14 1920-12-14 Improvements in or relating to micrometer gauges

Publications (1)

Publication Number Publication Date
GB174275A true GB174275A (en) 1922-01-26

Family

ID=10374442

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3515420A Expired GB174275A (en) 1920-12-14 1920-12-14 Improvements in or relating to micrometer gauges

Country Status (1)

Country Link
GB (1) GB174275A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092913A (en) * 1960-01-08 1963-06-11 Erling P Bugge Micrometer screw measuring instrument
CN115070479A (en) * 2022-06-15 2022-09-20 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Lathe workpiece positioning device and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092913A (en) * 1960-01-08 1963-06-11 Erling P Bugge Micrometer screw measuring instrument
CN115070479A (en) * 2022-06-15 2022-09-20 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Lathe workpiece positioning device and method
CN115070479B (en) * 2022-06-15 2023-12-08 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Lathe workpiece positioning device and method

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