Telescope type extinction meter for ground glass use, with built in magnifier. Decoudin Loupe-Photometrique
Made in Germany, Telescopic type meter; number step wedge and blue patch. Aperture and FPS scales. In leather case. Willo extinction meter for cinephotography
Extinction meter; grey scale numbered 1 to 32 in small plastic mount; flexible scale calculator; in plastic box. Leudi extinction meter
Drem cine meter. Extinction meter, direct vision type, with three scales f/1-32 FPS 8-128 and Schenider film speed 17-30. Drem cine meter. Extinction meter
Justophot Automatic Drem Exposure Meter. Telescope-type meter; scales for time, speed and aperture; in leather case; in original box with instructions. White metal tube with eye-piece. box also contains leather case, abridged instructions and full instructions booklet. Patentee Dr Emille Meyer. Drem Justaphot extinction meter 1930
Telescope type extinction meter; shutter speed scale numbers visible in eyepiece. In leather pouch. Drem Justaphot extinction meter circa 1930
Telescope type extinction meter. Blue tinted field and circular continuous wedge with shutter speeds visible in eyepiece. Depth of focus table. In leatehr case. Practos exposure meter
Extinction meter for use of ground glass screen. Blue filter in eyepiece. f/4.5-36 aperture range. 80 secs to 1/200 sec time range. Pressed metal circular case containing white metal meter. Cardboard and metal liner in case. Heyde's Actino Photometer circa 1930