• Manufacturer : WESTON Electric & Instrument Co.
  • Type : model 264;   W.U.Tel. Co.:  type 1-A. 
  • Produced (last patented) : July 16, 1901;  U. S. A.
        - patented : November 6, 1888;  April 29, 1890;  February 17, 1891;  October 4, 1898
  • Device : Telegraph DC milliamperemeter +/- 175 mA for inspecting East/West lines
  • Materials : mostly brass and aluminum
  • Operating estimation (1-10) : 10
  • Global estimation (1-10) : 9
  • Specials : three points connection to the telegraph system
       -  pointer has relative good stefling on both ends

       -  these indicators were built into Telegraph equipment by W.U.Tel. Co. on the

          begining  of the 20th century, special by long distance telegraph routes
  • Note : early and wanted instrument for collectors

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