what would you expect ? A voltmeter and some amperemeter as a kit ? I doubt that such a thing is available as the current ranges vary greatly.
What is available:
A lot of voltmeters easily able to measure the DC linik voltage. When it comes to measuring the switched voltage, HF oscilloscopes with appropriate ratings with and without isolation are available.
Regarding current measurements: current 'clamps' AC or DC capable are available. Or you may want to add a sense resistor of appropriate rating and measure the voltage drop.
Multimeters generally fail to measure a correct average voltage.
Solution for measurement: put a low pass filter of 1 megaohm precision 0.5W in each line and 1nF in parallel with the meter. Using a 20 Mohm multimeter it attenuates 1.1 time, but you get rid of all the HF and the multimeter is accurate again. Current: also a low pass filter (low impedant) and voltage using constantan wire based power precision resistor, about 1V drop. Constantan wire can be soldered when first etched using diluted chloric acid.
In feedback? Differential amplifiers using low pass at the input for voltage, LEM type modules for current.