Name/Title
Military Test EquipmentEntry/Object ID
1000.1809.3Description
Equipment, Test, MilitaryMade/Created
Date made
1941Notes
model name: Frequency Meter
model number: BC-221-AJ
serial number: 1685General Notes
Note
US Army Signal Corps
125 to 20,000 Kilocycles
Two earphones in lower tray.
Wooden enclosure.