FIELD: measuring technique.
SUBSTANCE: device comprises platform and six members made of truncated cones. The diameter of the bases is equal to D. The bases of four truncated cones are arranged in a single plane. The bases of two other cones are located at the distance H from the plane. The platform is made for permitting it to be positioned in the field of illumination of at least one optical device and in the field of sighting of at least one recording optical device.
EFFECT: enhanced precision.
3 cl, 1 dwg
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