PACER Instruments (TM) DH500 - Hygro-Thermometer NIB never used

Description

DH 500  Hygro Thermometer --- Pacer's Model is designed to check relative humidity and temperature in the air conditioning servicing, computer rooms, storage, heating, environmental industries etc.  This is a never used instrument but it is an older model.   See all photos for details of instrument.  Case and Operating manual is enclosed see photos
photo 1 - display readout - degree F
photo 2 - display readout - degree C
photo 3 - display readout - relative humidity