Impact Register TH-E Recorder Pennsylvania RailRoad in Original Metal Case 
Vintage 

TH-E Recorder

The TH-E (Temperature and Humidity) Recorder was developed to record dry bulb temperature from -25°F to +150°F and relative humidity from 0% to 100%. Temperature is recorded on a 3-1/2 inch space on the chart. The relative humidity is recorded on a 2-1/2 inch space. Special design makes it possible to record information even when subjected to shocks as encountered in all types of transportation.

The recorder look in good condition just need a new battery ( see the pictures ).

Buyer pays $25.00 S&H