Condition: Reacts a little to light, but works inaccurately due to age.
Properties
A device with one measurement limit for brightness and two for illumination, having a miniature galvanometer with an intra-frame magnet and high sensitivity (the deflection current of the galvanometer needle is 25 ... 30 μA)
The readings of the galvanometer are transferred to the calculator using a tracking arrow associated with the calculator. The light receiver is a selenium photocell. The design is similar to the exposure meter "Moscow-2". Removable milk filter for light measurement. The high-sensitivity mode is activated by moving the photocell forward (turning the film speed dial).