Glass specific gravity hydrometer marked Townson & Mercer

Made:
1900-1960
maker:
Townson and Mercer

Glass specific gravity hydrometer marked Townson & Mercer. Range 1.500 - 2.000. Mercury weight and paper scale. In cardboard tube, cap missing, 1900 - 1960.

Details

Category:
Experimental Chemistry
Object Number:
1997-1147
Materials:
glass, mercury, paper (fibre product) and cardboard
type:
hydrometer
credit:
Unknown source