Chapter 7

The other instruments were no less noteworthy. Dunark had adopted the Perkins telephone system, but had improved it until it was scarcely recognizable, and had made it capable of almost unlimited range. Even the guns—heavy rapid-firers, mounted in spherical bearings in the walls—were aimed and fired by remote control, from the board. He had devised full automatic steering controls; and acceleration, velocity, distance, and flight-angle meters and recorders. He had perfected a system of periscopic vision which enabl…