Petit tourniquet, late 18th or early 19th century.

Lucien Sharpe micrometer, c 1850.

Two castration devices, late 19th to early 20th century.

Oval alarm watch, French, early 17th century.

Very early Edison carbon filament lamp, 1879.

Bank of England bullion balance, devised by J Barton, 1820.

Steel bullet extractor, 17th century.

Surgeon's tools and case, late 18th or early 19th century.

Early Culpeper type microscope, c 1725.

Steel bullet extractor, German, 17th century.

Steel bullet extractor, German, 17th century.

Early British transistor, 1950-1953.