Fig. 60.—Bulkhead Fitting for Lighting two Cabins with one Lamp.details

Fig. 60 shows another form of bulkhead fitting designed to economise lamps. As will be understood, it is fixed in a hole cut in the bulkhead to receive it, say between two cabins, the flange shown being screwed to the woodwork, and the light showing on either side. This fitting is most frequently used where a permanent light is required. It would hardly do for cabin lamps, except in special cases—as, though it could be arranged for a switch in either cabin to turn on the light, neither could turn it off if the switch in the other cabin was closed, which would hardly be convenient for an officer who wanted to turn in during his watch below, if his light happened to belong to the next cabin too, and the owner of that cabin to want the light burning.” (p. 152)