Procedure for Increasing Versatility of a Commercial Projection-Comparator

Author: Chojnowski, B. S.

Source: Applied Spectroscopy, Volume 11, Issue 1, Pages 1-58 (February 1957) , pp. 46-46(1)

Publisher: Society for Applied Spectroscopy

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The old model Applied Research Laboratories Comparator-Densitometer, which consists of a carriage with a 35 mm. film holder and a 2 by 10 in.-glass master plate holder, has the basic disadvantage of not being readily adaptable for the comparison by projection of spectra on two different films.

Document Type: Short Communication


Affiliations: Driver-Harris Co., Harrison, N. J.

Publication date: February 1, 1957

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