
Specification. An artificial ear for the calibration of earphones of the external type.
NORM herausgegeben am 13.1.1954
Designation standards: BS 2042:1953
Note: UNGÜLTIG
Publication date standards: 13.1.1954
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategorie: Technische Normen BS