Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 14
t to run o hours. During that time it rubbed overthe 3 «>f wire more than too.ooo times. The middle point in resistancemi the wire was measured before and after the test, and absolutelj nodifference could be noted due to the rubbing. The two measurementsagreed with each other within 1-500 of 1%.… … 4^6 4257. Kohlrausch Slide Wire Bridge $100 00 \\ oh rlie >sta1 a >ils in tin- base This 1- tlii same as the above, but 1- mounted on a box in which thereare rheostat coils of 1. m. 100. 1000 and 10,000 ohms resistance. These arranged so that the) can be connected to either one or the…
Electricity · Electrical Equipment · Electric Circuits · Electronics
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