Hydrometer Nicholson

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.

Circular gauge reads 0 to 50 lb./in x 1 & o to 3.5 Kg/cm x 0.1 actual (total) pressure with clear perspex back so that the working parts may be seen.