Steel after abrasive cutting. Light microgr

Small child with Christmas shopping, 1937.

Woman making an umbrella, 1932.

Workers in a cable factory, 1933.

Workers in a cable factory, 1933.

Children tobogganing, 1945.

'Eighth Exhibition of Poster Art', LNER poster, 1930.

Worker operating a braiding machine, 1933

Operating theatre, London, 1932.

A selection of early draw tube refracting telescopes, early 18th century.

Hand-held polariscope, 19th century.

'How to build a two valve set', No 12, Godfrey Philips cigarette card, 1925.