FIELD: measuring engineering.
SUBSTANCE: method comprises irradiating the object by a mono-pulse laser, using comparator, focusing the radiation at a point on the object and two points on the measuring base, and receiving the sound signal by means of acoustical aerial. The emitter, receiver, and aerial are arranged along the optical axis of the focusing system. The device comprises focusing system for the laser emitter and comparator with the measuring base. The receiver of the acoustical signals has a wide-band high-frequency aerial. The axes of the aerial, acoustical receiver, measuring base, and focusing system are axially aligned.
EFFECT: enhanced accuracy.
10 cl, 2 dwg
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