High accuracy, full view designVolts, amps, watts, vars, speed, frequency and power factorHigh overload capacityRuggedized (High Shock) versionsUltimate in reliability and performanceSpecial scales and calibrationFormerly Westinghouse brandType K-241 & 261 instruments are designed to achieve the ultimate in reliability and performance. These instruments are recommended for use on electric utility switchboards and industrial process control panels. Commercial instruments comply with ANSI Standard C39.1 for 1% class switchboard instruments. The Hi-Shock versions were developed to meet the special needs of U.S. Navy shipboard applications. They are also suitable for commercial, marine and industrial applications subjected to humid conditions or severe mechanical shocks.