BS 2497-2:1969

Specification for a reference zero for the calibration of pure-tone audiometers. Data for certain earphones used in commercial practice.

NORMA vydaná dňa 10.3.1971

The information about the standard:

Designation standards: BS 2497-2:1969
Note: NEPLATNÁ
Publication date standards: 10.3.1971
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS