Walferdin's Maximum Mercury Thermometer, 1840-1898

Made:
1840-1898 in Bonn
maker:
Müller
and
Francois Walferdin

Walferdin's overflow mercury thermometer for recording maximum temperatures made by H. Geissler and Müller, Bonn, Germany, 1840-1898

Details

Category:
Heat
Object Number:
1898-96
Materials:
glass, mercury, brass (copper, zinc alloy), textile, ivory or bone and asbestos (possibly)
Measurements:
overall: x 365 mm x , 28 mm, .18kg
type:
thermometer (mercury)
credit:
Townson and Mercer Limited