Simpson’s Tru-Vue family of analog panel meters offers a modern, clear acrylic front lens, and a clean, open scale to update your panel design. Tru-Vue panel meters provide reliable measurement of AC volts with five popular sizes to choose from. Simpson AC meters measuring voltage inputs between 1 and 300 volts are self-contained units. Voltage inputs of 500 volts or higher must be used with an external multiplier. Iron-vane units have ±2% full scale (F.S.) (±3 F.S. for rectifier) accuracy and meet American National Standards Institute specification ANSI C39.1. Attractive black satin, die cast bezels are available in 3-1/2 and 4-1/2 inch sizes for behind-panel mounting. The movement construction provides excellent readability under severe conditions where shock and vibration would destroy or limit the life of a standard movement.