A research project was designed to repair and optimize the performance of a. prototype Ansco Model 4 Microdensitometer which had been inoperative for several years. Repairs were made in the start circuit of the control panel, lamp voltage control and the 2nd cut-in potentiometer to make the instrument operative. Calibrations and alignments were made and an apparatus was designed and implemented to facilitate lateral slit alignment. The original objective of optimization was not met due to insufficient time but the instrument was made operative and accurate to less than 2% over the 0-3.0 density range and 15% above 3.0. Recommendations have been made within the project report whose implementation would further improve the performance of the instrument. It was strongly recommended that this project be continued as another senior research project during the next academic year.

Library of Congress Subject Headings

Densitometry; Photometry

Publication Date


Document Type

Senior Project

Student Type


Department, Program, or Center

School of Photographic Arts and Sciences (CIAS)


Schumann, G. W.


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