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
Wynne 'Hunter' infallible exposure meter. In the shape of a pocket watch. By touch on the spring catch the two halves spring apart. Contains sensitive paper and two tints together with the printed table. The other half contains a calculator. c.1912 Wynne 'Hunter' Infallible Exposure Meter
Wynee's Infallible Hunter meter. An actinometer - pocket watch form; opens to reveal sensitive paper holder in one half and calculator in the other, Scales: 64 seconds to 1/1000, f.3 1/2-156. Wynne's Infallible Hunter meter
Wynne's Infallible Actinometer. Watch-form actinometer, clear glass and mask with standard tint over sensitive paper disc. Yellow filter disc cemented on rotating glass. Wynne's Infallible actinometer
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
