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Key switch, type C-412-C, by Muirhead and Co. Ltd.

Extra wax hull for William Froude's hull-model shaping machine

1872-1956
Working model, scale 1:8, of William Froude's hull-model shaping machine (1872), used to create hull models out of parrafin-wax, on wood base, by R.J. Harrington, British, 1872-1956. Machine works from the lines drawings of the vessels to be created.

Working model of William Froude's hull-model shaping machine

1872-1956
Parts of William Froude's original Resistance Dynamometer (1871) used in his researches on surface tension and ship resistance consisting of 1) Lever and index arm 2) counterweights 3) pivot 4) wood framing, by William Froude c.1871

Parts of William Froude's original Resistance Dynamometer

1870
William Froude's automatic roll recorder used to automatically record the rolling of ships at sea, first used on trials of the HMS 'Devastation' in 1873, devised and constructed by William Froude, Torquay, Torbay, Devon, England, 1872 This instrument was modified by Mr Froude in 1882 for trials of HMS Inflexible and a nyumber of other ships. It was last used in 1925 for trials on HMS Vixen [Eduard von Fischer 30/10/12]

Ship's automatic roll recorder

1872