Telemetering with Polycathode Counting Tube and Its Application to Dial-Indicator

Abstract

A new method of telemetering employing the principle of stepping tube is introduced. As this method is by the application of an electronic device, its response is sufficiently quick for the measurement of mechanical displacement. This is a chief merit of this method compared with the electromagnetic one (such as by self synchronous motor) which necessarily has a considerable inertia effect.
The signal sender consists of a group of contacts arranged on a straight line or on a circumference and a movable contact which slides on the contacts following the displacement to be meas-ured. The indicator means a stepping tube or a counting circuit using stepping tubes. The signal sender and the indicator are connected by 4 lines, and the momentary position of the movable contact of the former is indicated in the stepping tube of the latter.
This method is applied to indicate the readings of a dial-indicator with successful results.