Vintage Simpson Electric 0-200mA DC Milliamperes Panel Ammeter Model 27 1227Vintage Simpson Electric 0 200mA DC Milliamperes Panel Ammeter Model 27 1227 Step back in time to the era of classic American test equipment with this authentic Simpson Electric ammeter. Simpson meters are renowned for their reliability and durability, often found in industrial control panels, test equipment, and amateur radio setups built throughout the mid to late 20th century. This specific gauge measures direct current and would make an excellent