Portable testing set with galvanometer, by Nalder

Made:
Westminster
maker:
Nalder Brothers and Company

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Portable testing set with galvanometer, by Nalder Brothers and Co.

Details

Category:
Telecommunications
Object Number:
1989-974
type:
portables, portables, testing sets bridges, test sets and bridges, test sets and testing sets
credit:
Muirhead Vactric Components Limited