The first two photos show the first version of the Sverdolvsk-2 exposure meter. The second version in photos 3 & 4 has the addition of a battery check button on the front of the meter. The Svedlovsk-2 has a viewfinder to align the meter with the subject and a red LED to indicate the correct exposure settings. Film speeds in the range 1 to 2000 GOST (3 to 36 DIN) can be set and exposures from 30 minutes to 1/4000 second can be calculated. The meter uses 3 x 625 button cells. Manufactured in the 1970s.

David Tomlinson.