Abstract
The paper describes the design and construction of a new type of frequency meter. In the present instrument the important characteristic of a monostable circuit changing its state by an input impulse signal has been utilized for measuring the frequency of the input signal
The instrument covers a frequency span from 10 Hz to 10 kHz in three separate ranges, with a linear scale of indication. A permanent magnet moving coil type sensitive motor has been used as the indicating element. A consistency of better than 1 % has been obtained between the calibrations of the three ranges using the same scale. The authors fuel that they have been able to offer a novel frequency meter of good resolution, wide frequency coverage and rugged construction. The instrument requires no special maintenance skill.