LPG Hydrometer
Manufacturer: G & W Instruments Inc.
LPG Specific Gravity scale hydrometer, combined form with thermometer in body. For use in pressure hydrometer cylinder in the petroleum industry (ASTM D-1567). Thermometer range is 30-90° F. Hydrometer scale; 0.500-0.650, with 0.001° subdivisions. Length, 380mm (15"). ASTM 101H.