This is a vintage circa 1950's Kodak Darkroom Thermometer from the Eastman Kodak Company. Would be one of the earlier darkroom thermometers from Kodak since it is absent of the Kodak logo.

Cannot verify if thermometer works correctly - selling a collectors item for photographic history and is in excellent condition for display.

Glass tube is approx. 5 3/4" long and temperature readout is from -30° F to 120° F in 2-degree increments. There is a star between the 60 to 70 degree hashes to indicate the optimal developer temperature of 68 degrees.