Kelvin Double Bridge Kelvin Double Bridge – Physics Laboratory Equipment Specification: Kelvin double bridge for precise measurement of low resistance capable of measuring resistance from 0.1 micro – ohm to 1.1 ohms. Ten standard resistance of Manganin are provided in step of 0.1 ohm each in dial from with five multiple ratios of .001, 1, 10 and 100 ohms. The circulars slide wire of .01 ohms is also made from thick Manganin wire. Having extremely low temperature coefficient calibrated to 05 to 0.02% with heavy construction. Conforms to Conductor Resistance Test as per Four Terminals method and kelvin Principle for eliminating contact and lead resistance. Properly aged manganin wire resistance used. Reproducible measurements (Same value even after 25000 operations) Zero setting provision (Provided on slide wire dial) Hard silver plated switches are used (Specially designed) Current switch with reverse facility eliminates thermal e.m.f. Features: Compact design Easy to operate High performance
