Electrically-driven fork in "Elinvar" with patented screw adjustment for sliding weights

Electrically-driven fork in Elinvar' with patented screw

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Electrically-driven fork in Elinvar' with patented screw
Science Museum Group
© The Board of Trustees of the Science Museum

Electrically-driven fork in "Elinvar" with patented screw adjustment for sliding weights, (frequency 45r to about 90r) No. 65570.

Details

Category:
Acoustics
Object Number:
1932-555
type:
fork
credit:
Muirhead and Company Limited