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Rockwell Hardness Tester used by Monotype Corporation

Rockwell Hardness Tester used by Monotype Corporation

Herbert pendulum hardness tester, made by Spriggs

Herbert pendulum hardness tester, made by Spriggs

Brinall Hardness Testing Machine

Brinall Hardness Testing Machine

1918

A portable Brinell hardness tester

A portable Brinell hardness tester

Shore Scherascope (portable hardness tester)

Shore Scherascope (portable hardness tester)

1913

Vickers diamond hardness tester by Vickers-Armstrongs, Crayford, Kent. M/C no.250775, with box containing weights and accessories, c. 1950

Vickers diamond hardness tester by Vickers-Armstrongs

A portable Brinell hardness tester

A portable Brinell hardness tester

Brinell type hardness tester with weights for 500 and 3,000 kg, by W. & T. Avery Ltd. 1921

Brinell type hardness tester with weights for 500 and 3

1921

Rockwell hardness tester, c. 1930.

Rockwell Hardness Tester, c. 1930

1930

Herbert pendulum hardness tester, c. 1925

Herbert pendulum hardness tester, c. 1925

1925

Pendulum hardness tester, Herbert's, cased, by Edward G. Herbert, Manchester, c.1910, from BR Materials Engineering Group Laboratories, Derby.

Pendulum hardness tester, British Rail

1905-1910

Portable Rockwell hardness tester, recovered from British Rail Engineering Ltd. Swindon

Portable Rockwell hardness tester, British Rail Engineering Ltd

Shore Scherascope (portable hardness tester) by Schuhandt and Schutte, 1913

Shore Scherascope (portable hardness tester)

1913

Poldi hardness tester, in leatherette case with instructions, 1935, with 9 spare test pieces and instrument head in leather wallet, c.1930, from BR Materials Engineering Group Laboratory, Derby

Poldi harness tester, British Rail Materials Engineering Group

1935

Rockwell Hardness Tester, c. 1930

Rockwell Hardness Tester, c. 1930

1930