FR499378A - Perfectionnements apportés aux instruments de mesure de précision, tels que micromètres inscripteurs, calibres et analogues
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Perfectionnements apportés aux instruments de mesure de précision, tels que micromètres inscripteurs, calibres et analogues
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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
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FR499378D1919-01-271919-05-10Perfectionnements apportés aux instruments de mesure de précision, tels que micromètres inscripteurs, calibres et analogues
ExpiredFR499378A
(fr)
Perfectionnements apportés aux instruments de vérification et de mesure tels notamment que les calibres, les comparateurs et appareils ou instruments analogues