Maico Audiometer Model D-9 (0378)
Index: 0378
Year: Approx 1942
Maker: Maico
Dimensions: 46 x 26 x 22 cm
Info
From info from the Hennepin History Museum (see link below), this should be one of the first real audiometers for measuring a person’s hearing.
Inscriptions: on the apparatus:
MAICO
MEDICAL ACOUSTIC INSTRU. CO.
THE MAICO CO. INC.
MINNEAPOLIS. MINN. U.S.A.
SERIAL NO. 8209
