Calibrators
Multi-function and dry-block temperature calibrators, for checking the instruments everything else depends on.
- Multi-function sourcing and measuring
- Dry-block temperature
- Traceable calibration available
All Products
Electrical Test & Measurement
Site work and bench work
Calibrators, clamp testers, earth kits, safety testers, mechanical test, power quality and substation diagnostics. Eight sub-categories covering the installation, the machines on it and the instruments you check them with.
+44 (0) 203 093 09148Sub-categories
CAT IVHighest rating
Site & labBoth covered
UKASCalibration available
Eight sub-categories
Pick a type on the left, or read them all.
Filter by type
8 of 8 sub-categories
Need help choosing?
Tell us what you are testing and where, and we will tell you what fits and what rating you need.
Clamp Earth Testers
Ground loop resistance and leakage current without breaking the bond or driving a stake.
- No stakes and no disconnection
- Loop resistance and leakage current
- For bonded and meshed systems
Clamp Meters
AC and DC current measurement with true RMS, read through the conductor rather than in series with it.
- AC and DC current
- True RMS options
- No circuit to break
Earth Testing Kits
Earth resistance, soil resistivity and earth voltage, by the stake methods that give a true figure.
- Three and four pole methods
- Soil resistivity
- Stakes and leads supplied
Electrical Safety Testers
Insulation resistance, hipot and ground bond, for proving a product or an installation is safe to energise.
- Insulation resistance
- AC and DC hipot
- Ground bond
Mechanical Testing
Tachometers, vibration, alignment and balancing, for the rotating half of a plant room.
- Contact and optical tachometers
- Vibration measurement
- Alignment and balancing
Power Quality Analysers
Harmonics, flicker, transients and long-term logging, for faults that only appear when nobody is watching.
- Harmonics and flicker
- Transient capture
- Long-term logging
Substation & HV Asset Diagnostics
Turns ratio, winding resistance, tan delta and primary current injection, for transformers, breakers and the assets around them.
- Turns ratio and winding resistance
- Tan delta
- Primary current injection
Nothing matches that filter. Choose All to see them all.
What you get besides the box
Buying an instrument from us comes with the part that is harder to buy: knowing whether it is the right one.
Safety and compliance
Guidance on measurement categories, hipot and ground bond testing, and what the ratings actually mean for where you are working.
Demonstration and evaluation
Try an instrument on your own installation before you commit to it.
Portable and benchtop
From site-ready testers that live in a van to high-accuracy instruments that stay on a bench.
Warranty and calibration
One year warranty, with UKAS or traceable calibration arranged at the time of order.
Questions we get asked
What measurement category do I need?
It follows where you measure rather than what you measure. CAT II for appliances and socket outlets, CAT III for distribution inside a building, CAT IV for the service entrance and anything outdoors. Match the voltage rating as well as the category: both have to cover you.
Clamp earth testing or three and four pole?
A clamp is fast and needs no stakes, which makes it the right tool on a bonded or meshed system where a return path already exists. Stake methods give a true soil and earth resistance, and are what you want on a new installation or wherever the loop can be opened.
Can you arrange calibration?
Yes, UKAS or traceable calibration for most instruments. Tell us the instrument and whether you need it before delivery or on a cycle, and we will quote it with the turnaround.
Need help choosing the right instrument?
Our engineers are happy to help with specifications, lead times and compatibility.
Call usWe respond within one business day · Monday to Friday, 9am to 5pm