STC microphone type 4021A

Made:
1930-1950

STC microphone type 4021A (known as apple and biscuit) No. 20751.

Known as 'apple and biscuit' due to its usual shape with a spherical base and flat 'biscuit' top.

Details

Category:
Radio Communication
Object Number:
1960-128
Materials:
metal (unknown)
type:
microphone
credit:
British Broadcasting Corporation