Watkins Time Tank orginal carton
Watkins Time Tank orginal carton. Watkins Meter Co.
Watkins Time Tank. Daylight developing tanks for quarter plates. Galvanized frame for 12 plates, attached to lid, with light trapped hole for solutions. Tank has light trapped pourer. Watkins Meter Co.
Watkins Time Tank orginal carton. Watkins Meter Co.
Watkins Time Tank instructions. Watkins Meter Co.