Extinction type exposure meter. Telescope form. One of three numbers 1/25, 1/5 and 2m selected by clickstop ring. Adjustable ring for exposure. 1/500 sec to 30min. Aperture f/1-32. Film speed 21-31 degrees Sch. Fileter factors 2-8. Sliding adjustment focusing. c.1934 Drem Justaphot Exposure Meter 1929-1939
Justophot exposure meter, model 4. Extinction type meter. Brightness of of four figures: 1/25 1/5, 8, 2 varied by adjusting ring. Telescope form focusing. Aperture, shutter and filmspeed scales. Justophot exposure meter model 4
Visual extinction meter, telescope type, with case and instructions. Calibrated f/2.8-22 FPS 1-128. Film speed 17-30 degrees Sch. Kodacolor scale. Drem Cine Meter
