Taylor 5525J1 Mason's Hygrometer, Wall Mount, 0 to 120 °F, 1% to 97% Humidity, ±2 °F Accuracy, Liquid-in-Glass G0145327 UL Listed Contact Rating 0

UL Listed Contact Rating 0

They have a smooth surface

Isolated Coils

5% Stem Material 304 Stainless Steel Case Hermetically Sealed Window Material Glass Thread Type NPT Scale Celsius

15 micron End Vacuum

Taylor 5525J1 Mason's Hygrometer, Wall Mount, 0 to 120 °F, 1% to 97% Humidity, ±2 °F Accuracy, Liquid-in-Glass G0145327 UL Listed Contact Rating 0Hygrometer, Scale Type Liquid in Glass, 0 F to 120 F, Primary Scale Temperature, Dial Design Black and Red Markings with Red Liquid Fill on White Dial, Case Material Polystyrene, Graduations 2 F, Humidity Range 1% to 97%, Wall, 10 in L x 4 in W. Mason's hygrometers use a dry bulb thermometer and wet bulb thermometer to measure ambient temperature and humidity. A chart or table included with the hygrometer displays the difference between the two