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CE Johansson AB
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CE Johansson AB
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Publication of FR844287ApublicationCriticalpatent/FR844287A/en
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
G01B3/38—Gauges with an open yoke and opposed faces, i.e. calipers, in which the internal distance between the faces is fixed, although it may be preadjustable
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FR844287D1938-01-151938-10-04
Heat-insulating device for micrometers, gauges and similar measuring instruments
ExpiredFR844287A
(en)