Martindale CM95 AC Flexible Clamp Meter

Amazon

Fitted with a highly flexible current sensor just 5.5mm in diameter Ideal for measurements on difficult sizes and shapes of conductors Capability ensures accurate and reliable AC current measurement Measurements are accurate and reliable with 3 ranges up to 400A AC and resolution of 1mA in the 4A range The light weight flexible sensor head will accommodate conductors up to 85mm in diameter

Test-meter.co.uk

Martindale CM95 AC Flexible Clamp Meter. 18 flexible clamp, 85mm diameter, 0-400A true RMS measurement, 0.001A resolution, ±3% accuracy, Cat III 1000V/Cat IV 600V safety rating.