G
PHYSICS
G01
MEASURING; TESTING
G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11/00
Measuring arrangements characterised by the use of optical techniques
G01B11/24
for measuring contours or curvatures
G01B11/245
using a plurality of fixed, simultaneously operating transducers