Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 1009
The Macallen Solid Mica Insulating Joint is the recognized Standard Insulating Joint, and iaapproved by all Boards of Underwriters. We testall Joints with 25 lbs. of Air Pre-sure. . . WE DESIGN . . and make Special Insulators for high voltage and.other special purposes, and pay particular… … Automatic time Switches ARETO-DAYA VALUABLE AD-JUNCT .IN ELECTRIC LIGHT-ING IN GIVING OPPORTUNITY TO USE THE CURRENTAT POINTS NEEDED FOR ACERTAIN LENGTH OF TIME,AND THROWING IT OFF ATA GIVEN HOUR AUTOMATIC-ALLY. Tn Shew mindow Display IT ESPECIALLY COMMENDSITSELF. ONE WILL HAVELIGHTS BURNING…
Electrical engineering
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