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Set of eight tuning forks, Unknown maker, 1935-1950

1935-1950

Tuning fork with chamois case

Mounted tuning fork

Mounted tuning fork

Mounted tuning fork

Mounted tuning fork

Mounted tuning fork

Tuning fork

1701-1900

Tuning fork 'A'

Exposed tuning fork sustained magnetically with driving coil

Tuning fork

Tuning fork

Mounted tuning fork

Set of eight tuning forks

1860-1900

Tinsley & Co electrically main

Used in research Laboratory during second world war for timing highspeed cine film made in Kodak HighSpeed 16mm camera. Terminals for maintaining circuit (2 volts) and fork contacts. No 22919.

60 Cycle Tuning Fork

Pair of tuning forks marked W.E.C. London, used as frequency standards for setting up electronic circuits pre-1924. Frequencies 900 and 1000 hertz

Pair of tuning forks marked W.E.C. London