BS 4009:1975

Specification for an artificial mastoid for the calibration of bone vibrators used in hearing aids and audiometers.

NORMA vydaná dňa 31.7.1975

The information about the standard:

Designation standards: BS 4009:1975
Note: NEPLATNÁ
Publication date standards: 31.7.1975
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS