Hearing aids. Specification for magnetic field strength in audio-frequency induction loops for hearing aid purposes.
STANDARD published on 31.12.1981
Designation standards: BS 6083-4:1981
Note: WITHDRAWN
Publication date standards: 31.12.1981
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: British technical standard
Category: Technical standards BS