Electrical measuring instruments : grand prize Louisiana Purchase Exposition, St. Louis, 1904 (1904)
Leeds and Northrup Company · leaf 18
dinto which the ends of a cable may be soldered. Immersed in oil. as aprecision standard oi resistance it has a current carrying capacity of 32amperes. Used for measuring current to a lesser degree of accuracy itwill carry 100 amperes or more. Apparatus for Measuring Low Resistances The variable… … 4300 The apparatus is based on the principle of the Kelvin double bridge.Tor a full description of which see our Pamphlet No. 4 on StandardResistances. It is nt^vcl in that it makes use of a variable standard lowresistance instead of a continuously variable set of ratio coils. A carefulcalculation…
