BS 2497-5:1988

Standard reference zero for the calibration of pure tone air conduction audiometers. Specification for a standard reference zero using an acoustic coupler complying with BS 4668.

NORMA vydána dne 29.2.1988

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The information about the standard:

Designation standards: BS 2497-5:1988
Note: NEPLATNÁ
Publication date standards: 29.2.1988
The number of pages: 8
Approximate weight : 24 g (0.05 lbs)
Country: British technical standard
Kategorie: Technické normy BS