HD 450.5 S1:1985
Current
Current
The latest, up-to-date edition.
Hearing aids - Part 5: Nipples for insert earphones
Published date
18-06-1985
Applicable to insert earphones which can be fitted to an earmould inserted into the ear canal. Defines those dimensions which are essential in order to ensure interchangeability of insert earphones as used with earmoulds or other attachments to the ear.
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