Best Voltmeter
The Heathkit IM-18 is a Heath Company vacuum-tube voltmeter kit introduced in 1968. It is an electronic test instrument for measuring DC voltage, AC voltage, peak-to-peak voltage, and resistance, with a high-input-impedance design intended to reduce loading of the circuit under test. The assembly ma...
The Heathkit IM-13 is a kit-built vacuum-tube voltmeter intended for service benches and electronics testing. Its functions include measurement of positive and negative DC voltage, AC voltage, and resistance; the instrument provides seven main voltage ranges from 1.5 to 1,500 volts and uses a high-i...
The Heathkit IM-11 is a vacuum-tube voltmeter kit designed for measuring AC and DC voltage, resistance, and related electrical values in electronic circuits. Its vacuum-tube input provides high impedance, reducing the effect of the meter on many circuits compared with simpler low-impedance instrumen...
The Heathkit IM-28 is a solid-state electronic voltmeter sold by Heathkit in kit form. Its high input impedance was intended to reduce the loading effect that a measuring instrument can impose on the circuit under test, an important consideration when working with electronic equipment. The unit belo...
The Heathkit IM-17 is a solid-state utility voltmeter sold as a kit by Heathkit. It measures direct-current and alternating-current voltage and includes resistance ranges, using a high-impedance electronic input for measurements in electrical circuits. The instrument was intended for hobbyists, home...
