Eisco-One-Metre Wheatstone-Bridges-Eisco-PH1156B-P-This-Wheatstone-bridge-allows-accurate-comparison-of-two-resistances-by-sliding-a-jockey-contact-along-a-metre-length-of-resistance-wire-P-P-When-a-balance-is-achieved-indicated-by-a-zero-reading-on-a-galvanometer-not-included-the-position-of-the-jockey-on-the-wire-gives-an-indication-of-the-ratio-of-the-two-fixed-resistances-If-the-value-of-one-of-the-fixed-resistances-is-known-the-value-of-the-other-can-be-inferred-P-P-The