A direct reading relative density hydrometer of streamlined form with parallel graduated stem and shot-loaded bulb. All glass. Range at 60° F 0.700 to 2.000 x 0.010. ...
Glass Hydrometer range 1100-1300 with coloured zones, blue, white and red for charged, partly charged, uncharged conditions respectively. Glass body, compressible rubber bulb and rubber tube with fitting to body in card box....