Specifies symbols and other markings for the switches and controls on hearing aids and related equipment for the benefit of users and those involved in the fitting of such equipment.
Published: 03/30/1984 ISBN(s): 0580137953 Number of Pages: 16File Size: 1 file , 580 KB Product Code(s): 00070141, 00070141, 00070141 Note: This product is unavailable in United Kingdom