Five glass specific gravity hydrometers by Dring and Fage. Lead weights and paper scales. In boxwood case. No. 1 equals range 600 - 650, No. 2 equals range 700 - 750, No. 3 equals range 750 - 800 and No. 4 equals range 800 - 850, No. 5 equals range 850 - 900.
- Experimental Chemistry
- Object Number:
- gravity hydrometer
- Laboratory of the Government Chemist
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