Rubber diaphragm.

Extrusion die for elastic band tubing, 1965-1975.

Elastic band tubing and elastic bands, 1996.

Rubber ball from Peruvian child's grave, c 1600, and rubber seeds, 1876-1934.

Working model of Sprowston post-windmill, 1780 to 1934.

Double A frame sextant with 12 inch radius, 1810-1826.

Double A-frame sextant of 12 inch radius, 1788-1803.

Man and woman looking through a rubber ring on beach, c 1935.

Box van, 7 March 1934.

Set of six divination bones, Zambia 1880-1920.

Measuring balance, Persian, 1700-1900.

Space-filling atomic models, c 1955.