Watkins' Snipe Meter, c. 1920
1920
Watkin's Experimental Time Thermometer
Watkins Bee Exposure Meter with Instructions and Speed Card
1926
Watkin's Time Thermometer, Commercial Pattern
Watkins Dial Meter
1900
Watkin's Time Thermometer for Autochromes
Watkins' Temperature Coefficient Calculator
Watkins' Experimental Testing Tank
Watkins' Experimental Exposure Meter
1889
Watkins' Print Meter, c. 1910
1910
Watkins Dial Meter Experimental Model
1900
Watkins "Bee" Exposure Meter with Original Box and Instructions
Watkins Exposure Meter, Barrel Type with Chain
Watkins' Watch Meter Earliest Pattern
1907
Watkins Standard Exposure Meter, 1890.
1890
Special Watkin's Diaphragm designed to give equal spaces between U.S. values for a calculating shutter
1902
Watkins Bee Meter
Watkins' Bee meter.
Watkins Colour Plate Meter
Watkins Junior Meter, c. 1895
1895
Watkin's Standard exposure meter (1900 pattern)
1900
Watkins' Calculating Shutter
Watkins' Focal Plane Meter
1907
Watkins' Indoor Meter
1900