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Henrici's harmonic analyser, No 3, 1894.

1894

Yule Harmonic analyser made by Cambridge Instrument Company Ltd. Pat. No. 14928

1890-1894

Kelvin's Harmonic Analyser

1878

Henrici's harmonic analyser

1887-1890

Harmonic analyser

Harmonic analyser

1929
Kelvin's harmonic analyser for tidal computations, 1878

Kelvin's harmonic analyses for tidal computations

1878
Michelson 80-Element Harmonic analyser (received badly smashed, repaired in Museum Workshop) with 3 Framed diagrams.

Michelson 80-Element Harmonic analyser

1897-1904
Harmonic analyser by Stanley, London, serial no. 30, in wooden case with instructions.

Harmonic analyser by Stanley

1948-1951
Stanley Harmonic Analyser model 3 serial 48 in fitted wooden case (one planimeter missing)

Stanley Harmonic Analyser in fitted wooden case (one planimeter missing)

1958
Prototype of Yule Harmonic Analyser together with box containing four gear wheels

Prototype of Yule Harmonic Analyser