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Instrument for automatic radiation focusing at medium of the data record-play back system
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Rotational speed regulator of programme carrier for photographic recording device
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Device for detecting extrema
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Servo system for reproducing photorecord
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Device for checking insulation resistance of conductors
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Device for controlling a.c.voltage regulator having increased frequency element
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Servo electric drive for marking scale-plates
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Extremum analyzer
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Device for vacuum stabilization
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Frequency converter
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Arrangement for lens centering
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Device for automatic lens centering
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Digital device for triac switching
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Dynamic d-trigger
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Frequency-phase vacuum-stabilizing device
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Device for comparing phase shift of square periodic signals
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Conductor insulation resistance checking device
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Pulse amplitude to code converter
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Technical parametr regulating device
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Device for optical part automatic centering
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