On a New Designed Potentiometcr

Abstract

The principle and some merits of a new potentiometer. which has two dials and a one-round slide wire resistanc in its measuring part, are shortly descr-ibed.
As for the advantageous properties of this instrument, the following three points are mentioned:-
(1) The total resistance is low;
(2) The resistance of the 2nd dial is of such a high value that the effect of contact resistance can be neglected;
(3) The resistance of the slide wire is low, so that it can endure long and frequent use.
The writer recommends the convenience of this instrument for general scie-ntific investigations and also for technical purposes.