Abstract :
The original concept of telemetry has become too limited to include all that now exists in the modern fields of telemetry and remote control. Modern progress has resulted in the need for new concepts to embrace two new branches of development. The first, Teletest, encompasses the new art of remote experimentation with its problems of multiple measurement and recording. The second, Telecontrol, refers to the science of control at a distance. The development of telemetry is reviewed and the distinguishing characteristics of the newer concepts are delineated. An interesting possible extension of Telecontrol to remote experimentation is pointed out. The recognition of the new concept of Telecontrol may stimulate progress in the field by unifying associated disciplines required to solve the newer problems.