FR821694A - Stopwatch tester - Google Patents

Stopwatch tester

Info

Publication number
FR821694A
FR821694A FR821694DA FR821694A FR 821694 A FR821694 A FR 821694A FR 821694D A FR821694D A FR 821694DA FR 821694 A FR821694 A FR 821694A
Authority
FR
France
Prior art keywords
stopwatch
tester
stopwatch tester
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
Other languages
French (fr)
Inventor
Ernst Norrman
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 filed Critical
Application granted granted Critical
Publication of FR821694A publication Critical patent/FR821694A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
    • G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
    • G04D7/1207—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring
    • G04D7/1214—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard only for measuring for complete clockworks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR821694D 1936-05-12 1937-05-10 Stopwatch tester Expired FR821694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US821694XA 1936-05-12 1936-05-12

Publications (1)

Publication Number Publication Date
FR821694A true FR821694A (en) 1937-12-10

Family

ID=22169478

Family Applications (1)

Application Number Title Priority Date Filing Date
FR821694D Expired FR821694A (en) 1936-05-12 1937-05-10 Stopwatch tester

Country Status (1)

Country Link
FR (1) FR821694A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108153140A (en) * 2017-12-29 2018-06-12 珠海罗西尼表业有限公司 Mechanical watch precision tester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108153140A (en) * 2017-12-29 2018-06-12 珠海罗西尼表业有限公司 Mechanical watch precision tester
CN108153140B (en) * 2017-12-29 2024-01-09 珠海罗西尼表业有限公司 Precision tester for mechanical watch

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