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Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 288
ow Solid 1 0.1920.225 9.813-4 2,5003.500 4,3005,900 6,0008,000 Stranded 0.2500.3120.3750.4370.500 13.022.030.040.052.0 2,5004,2005.7007,6009,800 3.0604,8606,8009,000 n,ooo 5,100 8,100 11,500 15,000 18,000 7,60012,10017,25022,50027,000 TELEGRAPH LINES AND CABLES 273 The sags of messengers at… … Fig. 6. 5. Underground Cable In-stallation. — In densely-popu-lated locaHties it is customary to place telegraph andTelegraph
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