Glass measuring cylinder, 19th century.

Glass measuring cylinder, 19th century.

Glas measuring cylinder, 19th century.

Glas measuring cylinder, 19th century.

Regnault's measuring cylinder and specific gravity bottle, 19th century.

Mills type graduated dropper bottle for chloroform.

"Single sand glass in four pillared wooden mount, 18th century."

Rain gauge, 1908.

Spirometer, 1876-1900.

Spirometer, 1876-1900.

Auto-Union car, Germany, 1930s.

Early Geiger counter, made by Hans Geiger, 1932.