Electrical measuring instruments : grand prize Louisiana Purchase Exposition, St. Louis, 1904 (1904)
Leeds and Northrup Company · leaf 26
JJ5U with 2254 2250. DArsonval Galvanometer, Type M, vi^ithout tube and coil $25 00 2252. Type S Tube and Coil for same 35 00 2254. Type M Tube and Coil for same 85 00 The magnet No. 2250 is made by a special process and is unusuallypowerful. It is arranged so that it will take either of the tubes…
