IPIQ

PHYSICS

G01

MEASURING; TESTING

G01B

MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS

3/00

Measuring instruments characterised by the use of mechanical techniques

G01B3/46

Plug gauges for internal dimensions with engaging surfaces which are at a fixed distance, although they may be preadjustable