Dual Display Hack – ebay special to Differential Current

In an effort to evaluate simple and accurate display for my various Power projects a little while back including my analogue DC load , I found and bought some panel meters from aliexpress here http://www.aliexpress.com/item/Blue-Red-Dual-LED-Display-4-bit-0-28-Digital-Ammeter-Voltmeter-Car-voltage-current-meter/1505911610.html on Discover A Lot More