Zeiss "Blink" Comparator Pamphlet 1931

SKU BR5591/Zeiss Blin Comparator Pamphlet 1931
Very Good condition. 8 page Pamphlet. Carl Zeiss Jena Bms 43 1931.

The Blink-comparator has been designed for the examination of stellar negatives on the "Blink" principle; that is to say, two negatives of the same object, but taken at different times, are presented to the eye in rapid alternation.

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