Image intensifier and image converter tubes. Method of checking useful diameter of the photocathode
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Image intensifier and image converter tubes. Method of measuring the contrast of the image
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Image intensifier and image converter tubes. Method of measuring the limiting resolution
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Image intensifier and image converter tubes. Method of measuring the low light level limiting resolution
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Sheet stamping dies. Intermediate plates-blanks for sheet stamping dies with diagonally positioned guide posts
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