Anthropometric instruments, Institute of Child Health, London, 1945-c 1990.

'Taking a Lunar Distance', 1891.

Diagram of buildings with angle measurements and notes, 1828-1831.

Electronic clarinet, 1999.

'Irish Peasantry, the Turf Kish', 1790.

Twisted railway line after the earthquake, Japan, 1891.

Gifu after the earthquake, Japan, 1891.

Plane table outfit, 1745-1755.

Z-tar digital guitar, 1999.

Edward Weston, English-born inventor, early 20th century.

Electronic clarinet, 1999.

Z-tar digital guitar, 1999.