Mason's Hygrometer (Red Liquid) -

Save $5.39
$53.90
$48.51

6 in stock! Order now.
SKU 736740

One thermometer bulb is kept constantly wet by a siphon reservoir while the other gives a dry temperature reading. Humidity is obtained by comparing the two readings on the enclosed chart. The red liquid masons hygrometer uses a safe and easy to read red liquid in place of the usual mercury. Dual scales of -10/50°C and 10/120°F.

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