[Use of the microprojector MRTU 42-2216-63 for microphotography]

Two methods of microphotography using microprojector MPTY 42-2216-63 without using microphoto heads are proposed. In the first method, a mirror camera without objective is introduced perpendicularly to the luminous flux going from the microprojector ocular to the vertical screen. Exposure time is determined with any photoelectric exposure meter. Photographs are obtained by projection printing. In the second method, microprojector is set for demonstration of the image on a horizontal screen. Instead of the latter, a photoframe with a negative photographic plate is used. Photographs are produced by contact printing. The exposure time is determined in this method as mentioned above.