Ayrton & Perry's secohmeter

Ayrton & Perry's secohmeter, no

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Ayrton & Perry's secohmeter, no
Science Museum Group
© The Board of Trustees of the Science Museum

Ayrton & Perry's secohmeter, no. 14105, by Nalder Bothers and Co. Westminster

Details

Category:
Telecommunications
Object Number:
1989-996
type:
ayrton & perry's
credit:
Muirhead Vactric Components Limited