Sling Psychrometer Red Filled, Weksler

Red spirit-filled thermometers provide increased safety and economic pricing. They contain a petroleum-based column with red dye, which is significantly safer than mercury. Two 5 1/2" red liquid filled lens front thermometers are attached to metal back with handle for whirling. Handle folds out of way when not in use. Supplied with humidity table. Range is 20 to 110° F in 1° div. Comes in a Cordura® protective case. Replacement thermometer tube Here Replacement wicks Here MPN 317S