Beat frequency oscillator

Made:: circa 1955 in Copenhagen county

maker:: Brüel & Kjær (Sound and Vibration Measurement) A/S

Beat frequency oscillator, Bruel & Kjaer, Copenhagen, Denmark, model 1014, in fitted carrying case, serial no.22663, circa 1955, with 2 leads (loose)

Details

Category:: Acoustics

Object Number:: 1993-322

type:: beat frequency oscillator

credit:: Royal Nat. Throat, Nose & Ear Hospital

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Beat frequency oscillator

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