Heathkit IB-2A Circuit: 4-arm impedance bridge. DC Measurements: Built-in power supply operates from 110V. AC. Binding posts provided for use of external supply. Meter: 100-0-100 microampere meter. AC Measurements: Built-in 1000 cycle generator. Terminals on panel for connection of external generator for measurement at other frequencies. Detector: Vacuum tube detector and rectifier make use of built-in meter. Panel binding posts provide for connection to external detector. Resistance: 0.1 ohm to 10 megohm. Capacitance: 100 mmf to 100 mfd. Inductance: 0.1 mh to 100 h. Dissipation Factor (D): 0.002 to 1. Storage Factor (Q): 0.1 to 1000. Accuracy: ½ of 1% decade resistors used. Tube Complement: 2-1U4 and 2-1L4. Power Supply: Power transformer and Selenium Rectifier. Cabinet Size: 8" high x 17" wide x 6" deep. Power Requirements: 115-125 VAC, 50-60 cycles, 10 watts.