Edc 520A programmable dc voltage calibrator up to 110V

Edc 520A programmable dc voltage calibrator up to 110V

This is an Electronic Development Corporation (EDC) Model 520A DC Voltage Calibrator. It is GPIB programmable but i don't have the manual. My unit is limited up to 110V. Resolution down to 0.0001 V. Has dings all around, including a bent handle on the left side (see photo). tested good and stable. Easy to operate front panel. Also has a sense line which can be shorted to the load line.
7 day right of return if not as described.