The E243 series AC-to-DC Ammeter-Voltmeter and Frequency Meter suitable for all AC-to-DC systems. This high quality analogue instrument is designed to measure an extensive range of electrical and electronic parameters. This comprehensive range offers DIN instruments, ANSI switchboard meters, panel indicators, sealed and ruggedized instruments and complementary selector switches for line-to-line and line-to-neutral readings. Instruments are precision engineered and robust in design, ensuring accurate measurement and display in the most demanding of environments. All instruments are available in a range of styles, sizes and specifications to meet the exacting needs of your industry. The high quality silicon bridge rectifier gives a linear scale down to near zero, where some compression occurs. Ammeters can be supplied for use with -/1/5A current transformers, whilst voltmeters can be scaled for use with voltage transformers. Meters can be used to measure DC at reduced accuracy.