AN/USM !81A telephone test set. Manufactured by Hewlett Packard. Similar to HP 3550A. Restored to like new condition by Army Depot Tobyhanna, PA. In 1991. Never used since restoration. Operation and maintenance manual included. In original Govt. Box (box opened for inspection)
Consists of the following instruments:
1. HP Model 204C Oscillator
2. HP Model AQ 353A Patch Panel
3. HP 403B, ME 260 A/U RMS voltmeter
two Patch cables and line cord are included in case cover storage compartment