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  1. ISS Calibration Card

    The ISS Calibration Card, check your equipment is within range using a precisely defined set of values printed in to this handy card. It even doubles as a key ring so it's always ready to use.
    including VAT @ 20%
    Regular Price:
    • Compatible with all installation and PAT testers
    • Earth Continuity Verification
    • Insulation Resistance Verification
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Items 11 to 11 of 11 total

Resistance, Capacitance & Inductance Decade Boxes 

You will only find the best brands of Decade Boxes at ISS. From low ohm resistance boxes to power resistance boxes, we can help you find the right tool to suit your purpose.

  • Accurate and Impartial advice - need to know more about a specific decade box? Give our helpline a call and speak to one of our product specialists for an instant answer.
  • 30 Day Guarantee - if you are not satisfied with a product for any reason, simply return it within 30 days for a full refund.
  • Free Delivery - Orders over £40 (exld vat) are delivered in 3-5 days free of charge at ISS, however when urgency is required you can purchase next day delivery.
  • Only Brand New Equipment - at ISS you will not be sold any testing equipment that has been used for demonstration purposes nor refitted faulty equipment.