Wooden box with two metal handles and inset front panel with painted decorative stripes; front panel has two toggle switches, four dials including a hearing loss dial and frequency dail each with display window, five jacks and a red light; pencil attached to handle by fabric; on back of device is a…
Wooden box with two metal handles and inset front panel with painted decorative stripes; front panel has two toggle switches, four dials including a hearing loss dial and frequency dail each with display window, five jacks and a red light; pencil attached to handle by fabric; on back of device is a metal label with manufacturer information held in place by four metal screws; inset on back are a fuse, power plug and a plug terminal.
Painted on front panel: "MAICO // MEDICAL ACOUSTIC // INSTRUMENT CO. // MINNEAPOLIS MINN. // SERIAL NO. 4793"; painted on metal manufacturer label: "MAICO // HEARING AIDS AUDIOMETERS'; stamped on metal manufacturer label: "D5 . 110V . 25C . A.C"