[Trade Journal]
Publication: The Telegrapher
New York, NY, United States
vol. 5, no. 40, p. 320, col. 3
Brooks' Improved Insulators.
THE Michigan Central Railroad Company are replacing the glass and bracket insulators on their telegraph lines with the Brooks patent - the screw shank - the kind that MOSES G. FARMER says gives a resistance in rain of "one hundred thousand megohms per insulator."
