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.
- Experimental Chemistry
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