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Gunson G4166

Price: £9.21 Earth lead length: 85cm

Circuit tester
Overall Auto Express rating

4.0

Essentially a twin of Draper’s 57680 (right), with all the same useful features. This includes the cartridge fuse-style tip and a sliding clamp probe designed to break through insulation. The unit also serves as a basic voltmeter, thanks to a selection of LEDs. But the higher price holds the Gunson back here.

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