James Nasmyth, Scottish mechanical engineer, c 1860s.

Five candlesticks with candles, 19th century.

Model, or small example, of Nasmyth's steam hammer, c 1848.

Tortoiseshell, 20th century, and snuff box, early 19th century.

Knot of mild steel, 1885.

Persian dagger with curved blade of watered steel, 18th century.

Spring steel slave whip, 19th century.

Spring steel slave whip, 19th century.

Spring steel slave whip, 19th century.

Spring steel slave whip, 19th century.

Model of Galileo's pendulum clock, c 1642.

Tonsil guillotine, French, mid 19th century.