Electrical measuring instruments : grand prize Louisiana Purchase Exposition, St. Louis, 1904 (1904)
Leeds and Northrup Company · leaf 14
wed it to run 6 hours. During that time it rubbed overthe 3 of wire more than 100.000 times. The middle point in resistanceon the wire was measured before and after the test, and absolutely nodifference could be noted due to the rubbing. The two measurementsagreed with each other within T-300 of… … 4^564257. Kohlrausch Slide Wire Bridge $100 00 \\ ith rheostat coils in tlie ba>e. Tliis is the same a> tlie above. l)ut is mounted Ui a bo.x in which thereare rheostat coils of i. 10. 100. 1000 and ro.ooo olims resistance. Theseare arranged so that they can be connected to cither one or the…
