Three glass hydrometers, one marked by Pastorelli

Made:
1850-1930
maker:
Pastorelli and Rapkin Limited
and
Unknown

Three glass hydrometers, one marked by Pastorelli & Rapkin with range 0.700 - 1.000 and 348mm long, one by unknown maker with range 1.300 - 1.600 and 359mm long, and one by unknown maker with range 1.600 - 2.000 and 385mm long. Mercury weights and paper scales. In box made of deal with mahogany veneer; box has tall glass beaker and spaces for fourth hydrometer (missing) and thermometer (missing), 1850 - 1930.

Details

Category:
Experimental Chemistry
Object Number:
1997-1142
Materials:
case: deal with mahogany veneer and glass with mercury weights and paper scales
type:
hydrometer
credit:
Unknown source

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