Ensuring that your test instrument provides accurate measurements on an on-going basis is strongly recommended.

The Calcheck card is a handy portable device that you can keep with your test instrument(s) to verify the continuity and insulation resistance has not drifted over a period of time. 

The range of known source fixed resistances built within the Calcheck enables you to verify the readings of your test instrument(s) against the manufacturer’s specification quickly and accurately. Such a flexible device simplifies the verification process and reduces the necessity for sending test instrument(s) off for calibration. 

Confirming the operation of electrician’s insulation and continuity test instruments is necessary under Regulation 4(2) ‘Systems, work activities and protective equipment’ of the Electricity at Work Regulations 1989.

For more information click here https://www.electricalsafetyfirst.org.uk/media/1208/best-practice-guide-7-issue2.pdf

Manufactured in the UK.