Lucien Sharpe micrometer, c 1850.

Cut-throat steel razor, owned by Lord Nelson, England, 1780-1805.

Amputation knife, Europe, 16th century.

Tinder pistol, all steel grasshopper variety. European, 1750-1800.

Tinder pistol, all steel grasshopper variety. European, 1750-1800.

Celluloid-covered steel buttons, early 20th 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.

Spring steel slave whip, 1801-1900.

Diamond tipped knife for eye surgery, Switzerland, 1980.