Multimeter Buying Guide: Budget to Professional
What True RMS, CAT ratings, and count resolution actually mean for your work.
Our Top Pick
Fluke 117 Electricians True RMS Multimeter
0 V·0 A·$189
9.0
Prices may change · Free shipping with Prime
Quick Comparison
| Product | Rating | Price | |
|---|---|---|---|
| Fluke 117 Electricians True RMS Multimeter0 V · 0 A | 9/10 | $189 | Buy on Amazon |
True RMS vs average-responding meters
Average-responding meters read correctly only on pure sine waves. True RMS meters measure the actual power content of any waveform — critical for switch-mode supplies, VFDs, and any non-sinusoidal load.
CAT safety ratings explained
CAT II covers household circuits. CAT III covers distribution panels and industrial equipment. CAT IV covers utility connections. Buy at least CAT III for any work in an equipment cabinet.
Fluke
Fluke 117 Electricians True RMS Multimeter
9.0
0 V · 0 A · 0 % · $189
Count resolution: 4000 vs 6000 vs 20000
Count resolution determines how finely the meter resolves values. 6000 counts on a 200V range resolves to 0.033V. 20000 counts resolves to 0.01V. Most bench work is fine at 6000; precision measurements need more.
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