Mercury Trough Porcelain

Demonstration type, fully enclosed in a transparent synthetic case for demonstration. 100 mm coated dial reads from 28 to 32 inches and 950 to 1040 millibars, air tight sealed all around, pressure rubber bulb provided to force the movements, for educative demonstration.

A) For light liquids calibrated at 20C. Combined scale range 70 – 10 & 700 bv- 1000.
B) For heavy liquids, calibrated at 20C; combined scale 1.000 to 2.000 & 0.70.