A multimeter is one of those tools where buying the wrong one will quietly cost you. The £25 special at the supermarket will measure 230 V the same as a £400 Fluke does on a sunny Tuesday — but the day you stick the probes into a three-phase distribution board, the cheap meter is the one that throws a fireball at your face. CAT ratings, fused inputs, true RMS and proper input protection are not optional for trade work; they’re the difference between a quick fault diagnosis and a trip to A&E.
We’ve shortlisted the five multimeters most worth a UK tradesperson’s money in 2026 — from the Fluke 87V for industrial-grade sparks, through the Megger AVO830 and Klein MM600 mid-range, down to the Draper DMM201 for plumbers and second-fix carpenters who need a meter once a fortnight. All prices are approximate UK retail at the time of writing and exclude any test leads or accessory upgrades.
If you only have time to read one line: buy the Fluke 117 if you’re an electrician, the Megger AVO830 if you’re an installer who already owns a Megger MFT, the Klein MM600 if you want the most safety per pound, and the Draper DMM201 if a multimeter is a once-a-week tool and you’d rather spend the money on a better drill.
Our quick verdict
Best all-round meter for UK electricians: Fluke 117. CAT III 600V, true RMS, low-impedance (LoZ) mode for ghost voltages, integrated non-contact voltage detector and a build that’s shrugged off twenty years of trade abuse without changing its design. Around £230–£270.
Best heavy-duty meter for industrial and plant work: Fluke 87V. Higher resolution, low-pass filter for VFD measurements, CAT IV 600V, and the meter most maintenance engineers reach for first. Around £420–£480.
Best value for installation electricians: Megger AVO830. Same brand as most UK MFTs, fits the same accessory ecosystem, fused 10A input and a properly readable display. Around £140–£170.
Best safety-per-pound: Klein MM600. CAT IV 600V at around £100. The spec sheet is hard to argue with at the money.
Best budget meter for non-electricians: Draper DMM201. True RMS, CAT III 600V, proper PTC-protected inputs and a price that means you can keep one in every van. Around £45–£60.
Specs at a glance
| Model | CAT rating | True RMS | NCV | Typical UK price |
| Fluke 117 | CAT III 600V | Yes | Yes | £230–£270 |
| Fluke 87V | CAT III 1000V / CAT IV 600V | Yes | No | £420–£480 |
| Megger AVO830 | CAT III 600V / CAT IV 300V | Yes | Yes | £140–£170 |
| Klein MM600 | CAT IV 600V / CAT III 1000V | Yes | No | £90–£120 |
| Draper DMM202 | CAT III 600V | Yes | No | £45–£60 |
The 5 best multimeters for UK tradespeople in 2026
Fluke 117 — Best all-round for UK electricians
Price: Around £230–£270 (Screwfix, CEF, Toolstation, Amazon UK)
The Fluke 117 is the meter that ends arguments on a commercial jobsite. It’s not the most accurate Fluke (the 87V is), it’s not the cheapest CAT III (Klein and Brymen are both cheaper), but it’s the one that lasts the longest in the real world and the one that almost every UK sparks ends up owning eventually.
The key features for UK trade use: CAT III 600V safety rating, true RMS, AutoVolt automatic AC/DC voltage selection, LoZ mode for stripping out ghost/induced voltages on long cable runs (vital when you’re fault-finding on a building site full of parallel runs), and a built-in non-contact voltage detector in the top of the meter. The min/max/avg recording is useful for chasing intermittent faults, and the input jacks are properly shrouded.
The display is 6000-count and is back-lit (auto-off after about 10 seconds) — readable in a dim plant room but bright enough to spot in a sunlit window. The case is the classic Fluke yellow over-mould, which still survives drops from full-height stepladders. The battery is a single 9V; you’ll get around 400 hours of use before swapping it.
Stocked at all UK electrical wholesalers (CEF, City Electrical, Edmundson), Screwfix and Toolstation, with next-day click-and-collect at almost every postcode. Includes calibration certificate, TL75 test leads and the AC175 alligator clips.
Pros: Best build quality in the £200–£300 band, LoZ mode is genuinely useful in UK installs, integrated NCV detector, fastest-growing aftermarket lead ecosystem (Pomona, Probe Master, Fluke TL225), trade-grade warranty of 3 years.
Cons: 600V CAT III only — not enough headroom for direct work on three-phase 415V LV switchgear (you want a 87V or AVO830 for that), back-light auto-off is short, the trip-and-bezel rotary switch isn’t as positive as Fluke’s premium models.
Fluke 87V — Best heavy-duty for industrial work
Price: Around £420–£480 (RS Components, Farnell, Test-Meter)
The 87V is the meter you buy when “good enough” isn’t. CAT III 1000V / CAT IV 600V rating means you can work directly on UK three-phase LV distribution gear with full safety margin. The 20,000-count display gives you four-digit resolution that the 117 can’t match. The low-pass filter strips out high-frequency noise from VFDs and inverter drives, which means accurate motor-voltage measurements without ghost numbers all over the screen.
Where the 87V really earns its keep is on intermittent industrial faults. The peak-min-max captures transients down to 250 µs — long enough to catch a contactor coil dropout that a 117 will simply miss. The temperature input (Type K thermocouple) is genuinely useful for plant maintenance.
Stocked through industrial channels (RS, Farnell, Distrelec) rather than the high street, and almost always sold with a calibration cert. Lead time can be a week or two if Farnell are out of stock.
Pros: Highest accuracy in this list, CAT IV 600V, low-pass filter, 20,000-count display, thermocouple input, 3-year warranty.
Cons: No integrated NCV, no LoZ mode (deliberately — Fluke argues LoZ shouldn’t be on a high-resolution meter), nearly double the price of the 117, overkill for domestic and small-commercial work.
Megger AVO830 — Best for installers running a Megger ecosystem
Price: Around £140–£170 (Test-Meter, Mister Worker, Amazon UK)
If your MFT is a Megger MFT1741 or MFT1825, the AVO830 makes sense for the same reason a Makita-platform tradesman buys Makita hand tools — same brand, same accessory ecosystem, same calibration provider. The AVO830 is a CAT III 600V / CAT IV 300V true-RMS meter with a 6000-count display, AC/DC voltage and current, capacitance, frequency, diode and continuity, plus a non-contact voltage detector built into the top edge.
The build is excellent for the money — Megger’s injection-moulded shell is heavier than the Fluke 117 and the rotary switch has a properly positive detent. The lead set is Megger’s own and is rated to CAT IV 1000V, so they’ll outlive the meter itself.
Where Megger has the edge over Fluke at this price is their UK service network. Megger’s Dover service centre will recal an AVO830 in 5 working days for around £55 and they’ll often spot-replace tatty leads at the same time. Fluke’s UK service is via Fluke Norwich and the turnaround is closer to 10 days.
Pros: Excellent value, identical ecosystem to most UK MFTs, fast UK service, NCV built in, CAT IV-rated leads, 3-year warranty.
Cons: 600V CAT III only, display isn’t back-lit by default (you have to press a button), continuity beeper isn’t as fast as the Fluke 117 — a small but noticeable detail when ringing out a 30A ring final.
Klein MM600 — Best safety-per-pound
Price: Around £90–£120 (Amazon UK, RS Components)
Klein has been the rising-star meter brand in the UK over the last five years. The MM600 is the model that put them on most sparks’ radar — CAT IV 600V / CAT III 1000V safety rating, true RMS, 6000-count display, low-impedance mode, continuity beeper, capacitance, frequency and temperature — at a price that’s roughly half the Fluke 117 with arguably better headroom on safety.
The catch is that the Klein doesn’t have an integrated NCV (you’ll need a separate pen — the Klein NCVT-3 is about £30 and is excellent), the case is plastic rather than the rubberised over-mould of the Fluke, and the rotary switch has a slightly notchier feel than either Fluke or Megger.
Stocked through Amazon UK and RS, slightly less easy to find at high-street electrical wholesalers, but click-and-collect at most B&Q stores within 24 hours.
Pros: Best CAT rating at this price point, true RMS, LoZ mode, capacitance and frequency, 3-year warranty.
Cons: No integrated NCV, no auto-volt AC/DC, slightly slow continuity beeper, less common in UK electrical wholesalers.
Draper DMM202 — Best budget meter for non-electricians
Price: Around £45–£60 (Toolstation, Amazon UK, Trade Counter Direct)
Not every tradesman needs a Fluke. Plumbers, heating engineers, kitchen fitters and second-fix carpenters use a meter often enough to need a real one but rarely enough that £230 is hard to justify. The Draper DMM202 is the meter for that bracket — true RMS, CAT III 600V, 6000-count display, capacitance, continuity, diode and frequency, with a magnetic backstrap for hands-free use on metal panels.
The build is honest for the money — the case is sturdier than the previous generation DMM200, the leads are CAT III rated (though the silicone sheath is a bit cheap and stiffens up in cold weather), and the function selector switch has a positive click. The display back-light is genuinely useful in a heating cupboard.
Where the DMM202 falls short of the Fluke and Megger is precision on low resistance readings and the speed of the continuity beep — fine for verifying earth bonds in plumbing, less fine for chasing a 2 Ω fault on a long mains run. For a daily-driver meter though, this is a different price band; the DMM201 is best thought of as the “I want a meter that won’t kill me on 230V and that I won’t cry about if it falls off the van roof” choice.
Pros: Properly fused input, true RMS, CAT III 600V, back-light, magnetic strap, 12-month warranty.
Cons: Not a serious LV distribution meter, leads stiffen in cold weather, no NCV, dial feel is mid-tier.
What actually matters when buying a multimeter for UK trade work
CAT rating — the only spec that protects you
A CAT rating describes the meter’s ability to withstand a transient overvoltage spike without exploding. CAT III 600V is the minimum sensible spec for any UK domestic or light commercial installation work. CAT IV 600V is required for direct work on the supply side of the consumer unit, including DNO cut-out fuses and origin testing. A “CAT II 600V” rating (which most supermarket meters carry) is rated only for socket-circuit measurements and will not survive a transient on a distribution board.
True RMS vs average-responding
All five meters in this guide are true RMS. Average-responding meters give correct readings on pure 50 Hz sine waves but underestimate the voltage on anything modern — LED lighting circuits, VFDs, EV chargers, switch-mode supplies. True RMS is non-negotiable on any meter you’ll use in 2026 because almost every load on a UK installation is now non-linear to some degree.
Input protection and fuses
Fluke, Megger and Klein meters in this list all use HRC (high rupture capacity) fuses on the current inputs. That matters because if you accidentally connect the meter across mains while in current mode (a depressingly common mistake), the HRC fuse breaks safely instead of exploding. The Draper DMM201 also has HRC-rated fuses on the 10A range, which is one of the reasons it earns its place here — cheaper meters from no-name brands often use ordinary ceramic fuses that will arc through and blow the case off the meter.
Where to buy in the UK
Fluke and Megger meters are best bought from a recognised electrical wholesaler (CEF, Edmundson, City Electrical) or Test-Meter / RS Components. Amazon UK does carry both but counterfeit Fluke 117s have shown up enough times that we’d recommend a wholesaler with a calibration cert in the box. Klein and Draper meters are safest from Amazon UK direct (sold and shipped by Amazon, not third-party) or Toolstation/Trade Counter Direct in-store.
Don’t buy a multimeter from a supermarket, a pound shop or eBay-listed “Fluke” units sold below £100. The fakes are convincing externally and dangerous internally.
Final verdict
For most UK electricians in 2026, the Fluke 117 is still the best multimeter to own. It’s the right balance of safety rating, feature set, build quality and resale value, and it’ll do 95% of the work a UK installer needs to do without ever being in over its head. If you’re working on industrial three-phase regularly, step up to the Fluke 87V or buy the Megger AVO830 as a second meter in your kit. If you’re a plumber, gas engineer or second-fix carpenter, the Draper DMM201 is more than enough meter for what you’ll actually do with it and leaves money in the kitty for a better drill, drill bits or torque wrench.
Whichever you go for, keep the test leads in a separate pouch, recalibrate every two to three years, and never — ever — leave the meter in current mode at the end of the day.
FAQs
Is a £30 multimeter safe for UK domestic work?
Probably not. Most £30 meters are CAT II 600V or unrated, and the input fuses are typically ordinary ceramic — neither is adequate for measuring directly at a consumer unit or any circuit upstream of a socket outlet. Spend at least £45 on a Draper DMM201 or equivalent if you want a meter that won’t hurt you on 230V.
What does “true RMS” mean and do I need it?
True RMS (root mean square) means the meter accurately measures the heating value of an AC waveform regardless of its shape. Modern UK loads (LEDs, EVs, inverter HVAC) are non-sinusoidal, and an average-responding meter will underread voltage and current on them by 10–30%. Yes — you need it.
Fluke or Megger — which is better?
Different lanes. Fluke makes the best general-purpose handheld meters in the world; Megger makes the best UK installation testing kit (MFTs, insulation testers, loop testers). If you already own a Megger MFT, the AVO830 multimeter slots neatly into that ecosystem and shares accessories. If your testing kit is mixed, buy Fluke for handheld multimeters and Megger for installation testing.
How often should I recalibrate?
Every two years for general trade use, every year if the meter is used for Part P installation certificates or for testing where the readings get formally recorded (PAT, EICR, commissioning sheets). Both Fluke UK (Norwich) and Megger UK (Dover) offer recal services with traceable certificates.
Are NCV (non-contact voltage) detectors reliable?
Useful but never definitive. An NCV detector tells you a wire is probably live; it doesn’t tell you a wire is definitely dead. Always confirm dead with a proper two-pole tester (Fluke T6, Martindale VT28) or with your multimeter set to AC volts in LoZ mode. NCV pens are good for first-pass screening, not for proving isolation.
