Keep an eye on the grounding capacity of your setup with this earth tester from Megger. It checks the resistance of the ground connection to give you a picture of how effectively your appliances can dissipate residual current. The instrument has a wide measurement range and assesses between 0.01 and 200kΩ of electrical opposition in two-pole, three-pole and four-pole networks. As it's battery-powered and lasts up to three hours before you need to recharge it, there's no need for a wired power source.

• Backlit 3.5-digit high-contrast LCD screen gives a clear display of measured results, even in dark spots
• Weighs only 1kg, so it's a portable choice for measurement on the go
• Resistance accuracy of up to 2% ±3 digits on 2P, 3P and 4P circuits for precise results
• IP54 rating shows that it resists limited amounts of dust and water spray

• Electrical transmission lines
• Machine building
• Telecommunications industry

This unit works at its best in a temperature range between -15°C and +55°C, making it a safe choice for demanding settings.