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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
G01B3/16—Compasses, i.e. with a pair of pivoted arms
G01B3/166—Compasses, i.e. with a pair of pivoted arms provided with a measuring scale
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FR653704D1928-05-021928-05-02Perfectionnements aux instruments de mesure tels que compas d'épaisseur, compas maître de danse, calibres, etc.
ExpiredFR653704A
(fr)
Perfectionnements apportés aux calibres ou pieds à coulisse, aux jauges de hauteuret aux instruments analogues pour mesurer des longueurs sur des ouvrages
Perfectionnements apportés aux instruments de vérification et de mesure tels notamment que les calibres, les comparateurs et appareils ou instruments analogues