FIELD: measuring engineering.
SUBSTANCE: device comprises light source and light receiver provided with means for processing information. The light source and receiver are made in block that is made of a tube. The scanning unit is provided with two channels optically connected with the tube and system of mirrors, which allow the light to pass from the tube to the outer or inner surface of the article through the channels. The scanning unit is optically connected with the tube so that the optical axis of one of the channels is in coincidence with the optical axis of the tube.
EFFECT: expanded functional capabilities.
8 cl, 1 dwg
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