Ammeter 1mA Input Scale: 100 Amp High quality range of Switchboard Instruments with class 1 accuracy, complying with American ANSI-C39.1(1981)  Specifications. Available in 4 case sizes, their rugged design characteristics meet the needs of the most demanding environment applications. This extensive range of analog meters provides 1% accuracy for all AC & DC ranges. *Includes alternate dials to swap: 65AMP 75AMP 200AMP 300AMP