NFC 97 612 : 1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
MECHANICAL COUPLER FOR MEASUREMENTS OF BONE VIBRATORS
05-01-2013
12-01-2013
Gives specifications for a mechanical coupler for the calibration of bone vibrators used in audiometry
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