Masons Wet And Dry Bulb Hygrometer

The mason's hygrometer is a wall-mounted wet and dry thermometer for determining the relative humidity.
The hygrometer measures the wet and dry temperature over the range of -10 to +50°C enabling the relative humidity to be calculated (1 to 97% RH). The unit incorporates a small water reservoir. The mason's hygrometer is supplied with a slide rule for calculating the % RH (relative humidity).

• Temperature range -10 to +50°C
• 1 to 97% RH
• Wall mounted wet & dry thermometer
• Not a Mercury Unit
The hygrometer is housed in a robust blue ABS plastic case that measures 40 x 80 x 310mm.