Glass tube 90 mm long closed at one end.
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A working model of a clear glass to show and explain the principle involved. It has a cylinder of 25 mm dia and overall lengths of 350 mm, cylinder is provided with non-return float valves and outlet is by means of a side tube.
Pipette type, comprising glass float calibrated having coloured zones for charged, partly charged and uncharged conditions. Compressible bulb and rubber tube with fittings to glass body.
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.
Jolly Air Thermometer bulb of mounted on a wooden frame that can be fixed at three places – up, middle , & down on the stand.
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