Category: Infection
Estimated Date: 1882
Name: Immisch’s Thermometer

Description: 1’ diameter pocket watch like arrangement. Silver case. Labeled Immischs Thermometer, pat Jan 3, 1882 serial #16191 with a fahrenheit scale from 70 to 111 and a centrigrade scale which corresponds. Calibrated in 1/2 degrees to 90 then in 2/10 for F scale. Needle is zeroed by pulling or pushing the fob. Records temperature on contact.

Reference 1: 419