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Theodolites. General specifications
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Telescopes of pyrometers of built up radiation. Calibration tables
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Electrical filament lamps for light measurements
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Flat-parallel glass. Sets
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Tripods for geodetic instruments. General specifications
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Tripods for geodetic instruments. General technical requirements and methods of tests
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Complete sets of light filter-lens and lens for railway lens signal lights. Specifications
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Optical bench of trapezoidal profile. Main and conjugated dimensions. Technical requirements
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Teodolites. Methods for determination of errors of horizontal circle diameter
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