[f. VOLT sb.2 + METER.] An instrument for measuring the pressure of electricity in volts.
1882. Eng. Mech., 10 March, 4/3. I have two instruments devised by Prof. Perry and myself, an Am-meter, and a Volt-meter, the one for measuring a strong current, and the other a large electromotive force.
1884. C. G. W. Lock, Workshop Rec., Ser. III. 132/1. This can be verified by connecting one terminal of a voltmeter to the negative brush.
1898. Engin. Mag., XVI. 139/2. Plan of the plant is given, showing how the dynamo, voltmeter, switchboards, and tanks should be connected.
