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measuring (10) 10
measuring angles (10) 10
measuring areas (10) 10
measuring irregularities of surfaces or contours (10) 10
measuring length, thickness or similar lineardimensions (10) 10
physics (10) 10
testing (10) 10
analogous arrangements using other waves (8) 8
determining distance or velocity by use of radio waves (8) 8
investigating or analysing materials by determining theirchemical or physical properties (8) 8
locating or presence-detecting by use of the reflection orreradiation of radio waves (8) 8
radio direction-finding (8) 8
radio navigation (8) 8
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