FOREWORD
PREFACE
1 Scope
2 Object
3 General
4 Marking of control settings
5 Miscellaneous markings and indications
6 Markings on hearing aid insert earphones
6.1 Impedance
6.2 Frequency response curve
6.3 Size and position of markings
7 Markings on bone conduction vibrators for hearing aids
7.1 Markings