Electrical measuring instruments : grand prize Louisiana Purchase Exposition, St. Louis, 1904 (1904)
Leeds and Northrup Company · leaf 15
re is a double binding post on each pillar sothat they can be connected together with copper links. The total resist-ance is wound on 40 spools ^o that there are 25.000 ohms to the spool.Each spool is thorouglily insulated. 14 THE LEEDS & NORTHRUP COMPANY Resistance Standards For more detailed… … 4215. Standard Resistance (Reichsanstalt Form) i ohm. .$20 00The resistance wire is wound on a metal cylinder 7 c. m. in diameterand 10 c. m. long. It is insulated from the cylinder by silk which isshellaced and baked on it. The wire in addition is double silk coveredand is shellaced and thoroughly…
