Glass measuring cylinder, 10ml, in case
Glass cylinder; brass base; milled screw
1800-1899
Simple viewer, English, mid 19th century
1830-1870
Double barrelled air pump
1801-1900
Simple viewer, English, mid 19th century
1840-1860
Simple viewer in case, English, early 19th century
1800-1825
Urinometer, mercury in glass
1850-1930
Urinometer, glass and mercury
1830-1870
Broken drainage tube in glass cylinder
Glass cylinder, ground on outside
1800-1899
Wire brush electrode in glass tube
1890-1905
Electrostatic machine
1850-1900
Glycerine syringe
1920-1940
Electrostatic machine
1801-1850
Gas cylinder
1801-1900