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Filter
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Filter for cleaning water
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Radiation plant
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Separating chamber
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Plant for waste water transfer
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Device for keeping standard direction
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Device for determination of angular turns of object
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Device for range line measurements
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Method for determination of rock deformation and device for its realization
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Apparatus to control position of equipment
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Direction maintenance device
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Geodetic wall datum mark
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Back plumb bob
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Photoelectric autocollimator
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Method of measuring twist of object
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Method of adjustment of flat facet mirror
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Device for standardizing gyrotheolite
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