The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 257
te number painted on a black number-style stripfitted on the left-hand side of each set. The first of such sets(which usually commences on the left of each section on the 230 PRACTICAL TELEPHONE HANDBOOK lowest multiple row) is numbered 0, for numbers rangingfrom 0 to 99. The next set to the right… … Fig 250.—Subscribers Section over the 0 set, and numbered 9, thus commencing another rowof hundreds, numbered from 9 to 17, the latter being fittedover the ninth set, numbered 8, and so on, building upwarduntil the full number of subscribers has been provided for. It might at first sight have been…
Telephone
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