Special Features:

Measurements for temp-sensor aged bimetal strip, temp span is adjustable and can be set to read 60 degrees c, accuracy pom 1 percent, graduations 1 degrees c, 2 degrees f; measurements for humidity-sensor human hair bundle, relative humidity, accuracy pom 1 per. Mid scale, pom 3 per. Extremes, graduations 1 per.; chart size 7" h x 11" l (178x280 mm); clock type 1.5 vac battery operated 2 aa cells; chart drum rotation may be selected to be 1 day (26 hrs), 7 days (176 hrs), or 31 days; switch selectable; pen type cartridge; weight 10 lbs; includes 2 pens, charts, glass window in hinged cover for ease of reading chart; material of internal parts chrome plated brass; pivot material instrument grade ss; case base cast aluminum

Properties:

An item which senses, measures, and records the temperature and moisture content of the surrounding atmosphere.