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G
PHYSICS
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G01
MEASURING; TESTING
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G01B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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9/00
Measuring instruments characterised by the use of optical techniques
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G01B9/02041
characterised by particular imaging or detection techniques
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G01B9/02044
Imaging in the frequency domain, e.g. by using a spectrometer
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