Dial is calibrated from 0°-140° F, made of stainless steel, with a cup for floating in the tank. Length: 6.5" 18903
Glass floats in the developing tank. Calibrated from 0°-220° F. Length: 10" 18904
Stainless Steel with hook for hanging on the tank. Calibrated from 20°-150° F. Length: 5" 18905
Digital runs on a standard watch battery (included) and comes with a lifetime warranty. Registers temps from -40° to 300° F. Simply press the button. Digital display. Length: 4⅝" 19107
