Actinometer, bookform, in wallet. Fold-out card containing instructions booklet, all within paper wallet. Imperial Exposure Meter
. Metal box with wooden paper holder. Circular aperture with yellow tinted glass and three segments of different densities Johnson Three-Tint actinometer
Wynee's Infallible Hunter meter. Watchform actinometer. Sensitive paper visible through window in the face; two scale 1/128 - 64, F. 4-362. Wynne's Infallible Hunter meter
Burton carbon print maker. Box with wooden paper strip carrier. Lid carries 6 negatives under a step wedge. Burton Carbon Print Meter
Watch pattern actinometer in original tin with instructions , Rapid Deadmatch paper. Wynne's Infallible meter 1910
Extinction type exposure meter. Reading made on small blue circle in larger field of ground glass, reducing effect of accomodation etc. Telescope type, tube marked with scale: H & D speeds 12-2000. Lens apertures f/1.4/64. Shutter speeds 1/5000 sec - 5 hours. Dr. Schlichter. Lios-Actinometer exposure meter (model photo) 1924-1934
Watkins actinometer, watch-form. Sensitive paper under blue glass and mask with standard tint. Fixed calculator engraved on back plate. Watkins actinometer
Hurter and Driffield Actinograph Patent No. 5545 1888, with slide rule calculator with roller, seals for H & D speeds 300-0.5: light: very dull - very bright, aperture f/2.8-64, exposure time 0.05sec to 60 secs. Time of year and day on roller. Calibrated for North latitude 52 30 0 degrees. In wooden case. Marion & Co. 1892. Hurter and Driffield actinograph 1892
Le Chronoscope PAP cylindrical actinometer. Lens at one end, paper holder with standard tints at the other. Print-out image of scene cf with standard tint; exposure time calculated from tables (missing) Le Chronoscope PAP actinometer 1907-1917
Actinometer; 4 tints numbered 1, 0.5, 0.75, 0.25 round rectangular aperture; provision for paper roll; probably homemade. Carbon tint actinometer
The Infallible Exposure Meter Company, Wrexham. Pocket-watch form actinometer; in tin with instructions, plate speed chart, replacement Autochrome dial and 2 packets of rapid deadmatch paper. Wynne's Infallible Hunter Meter 1910
Wynne's Infallible print meter. Plated metal box with paper holder in lid. Transparency numbered 1-16, lettered A-P printed under; ground glass (over numbers) opal glass (over letters); metal mask with graduated holes; opal glass. Wynne's Infallible print meter. Plated metal box with paper holder in lid. Transparency numbered 1-16
Imperial Duplex Exposure meter by Imperial Dry Plate Company Ltd. London. 3/6d. Actinometer in bookform leather folder. 2 calculators for bright and dim light. Imperial duplex exposure meter
Haka expometer. Disc form actinometer, metal. Metal calculator rings and mask rotate over disc of sensitive paper, held by friction of emery paper stuck in back. In leather pouch. Haka expometer. Disc form actinometer
Watkin's Bee Meter. Watchform actinometer. In original box with instructions (12th edition) Watkins Bee Meter
2 Herschel type actinometers, by Henry Barrow, London and 1848 and Thomas Charles Robinson, London, 1840 2 Herschel type actinometers 1848; 1840
Bookform actinic meter by Imperial Dry Plate Co., Cricklewood. No.1 bright light, No 2, dull light. Sliderule instruction calculators. Two instruction books and pack of sensitive. Imperial exposure meter
Two hinged brass strips - one with small cylinder for sensitive paper and milled grooved, the other with circular aperture and standard tints (missing). For carbon printing. Illingworth Actinometer
Wilson radio-integrator (an actinometer) by Hicks, circa 1906 Wilson radio-integrator (an actinometer) by Hicks 1906
Two pairs of blackened & gilt spheres, Violle's actinometer, tested at Kew in 1889 Two pairs of blackened & gilt spheres
Electronic actinometer, radiation sensor, pyranometer, set in demonstration stand (museum?), by Skye Instruments Ltd, Llandrindod Wells, Wales, 1999. With instruction leaflet. Electronic actinometer, pyranometer, radiation sensor, Welsh, 1999 1999
Watkins Junior exposure meter. Cylindrical form actinometer, wooden paper holder under mask and blue glass, two rotating calculator rings, 1893. Watkins Junior exposure meter
Watkins snipe actinometer, made by Alfred Watkins. Designed 'for open snaps'. 40mm round tin with card and glass lid; felt pads support paper discs. Darken 4 seconds for number 1 stop, single lens, 6 seconds. VPK 12 seconds RR. Watkins Snipe actinometer
Kodak actinometer for Brownie enlarging camera, made by Kodak Limited. 12 step wedge for Solio paper strips; gives exposure time required for soft Velox paper in enlarger. In card frame with printed instructions. Kodak actinometer for Brownie enlarging camera 1921
Autotype disc actinometer made by the Autotype Co. Ltd, c.1930. 2" diameter tin with glass lid. Grey standard tint card with circular hole. Felt-covered wooden insert for paper disc. Autotype disc actinometer made by the Autotype Co. Ltd 1925-1935
R Field & Co., Birminghm, 'Sole Makers'. Cylindrical actinometer; chain timing pendulum. Watkins Exposure meter
Watkins standard meter. Cylindrical form actinometer, end cap on chain forms 1 sec. period pendulum. Wooden paper holder at other end under mask with tint segment and blue glass. Three rotating calculator rings. Watkin standard meter
Wynne's Innfallible actinometer. Watch form actinometer, plain glass and mask with standard tint over paper disc. Cailbrated in German. Wynne's Infallible actinometer 1900
Watkins dial meter, made by Watkins Meter Co. Watch-form actinometer; plain glass and mask with standard tint; covered paper disc. Two levers adjust calculator dials behind mask. Watkins Dial Meter
Cylindrical actinometer taking roll of sensitive paper. Two fixed scales, two movable scales. Watkins Junior Exposure Meter 1893
Sanger-Shepherd Fraction-Tint actinometer. Glass tablet step-wedge with 25 steps. Sanger-Shepherd Fraction-Tint actinometer