Sper Scientific
736740
Mason's Hygrometer
Prix régulier
$18.00
Measure Humidity - Mason's Hygrometer - Red Liquid
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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