- Philadelphia, Pennsylvania, United States
- Jun 23rd
AMPROBE INSTRUMENTS AC VOLT-AMMETER RECORDER This is a vintage Amprobe AC volt-ammeter recorder that includes a leather case and is a AVA81 model. The volt meter is tested and working, and the chart recorder motor powers up and turns. I did not test the amps, and I didn't know how to install the chart paper, but it does include a partial old roll.