[Method of microphotoexposure].
It is suggested that a photoexposure meter "Photon-1" (TU-4-72) be used for the determination of exposure in microphotography. The photoelement of the apparatus is overlaid on the eyepiece of the photo device. The regulator of the apparatus is set in a position corresponding to the film sensitivity. The exposure meter shows exposure time in seconds.
D008843:Microfilming / Q000295:instrumentation / Q000379:methods*
K metodike mikrofotoeksponirovaniia.