01483 302 700



Caltest have been providing power sources and test instrumentation solutions for over 20 years and are proud to represent a number of industry leading manufacturers.

As well as supplying world class power sources and test instrumentation Caltest also has a service centre and UKAS calibration laboratory.

With a large range of rental and demonstration equipment, including AC power sources, Caltest can provide the rental equipment you require within 24 hours of order acceptance.

With a combined experience of almost 200 years in power sources and test instrumentation, Caltest offers unmatched knowledge, advice and support. We provide customers with a full range of facilities and service that makes us unique in the distribution industry.

At Caltest Instruments we can provide the following equipment:

  • AC Power Sources 
  • DC Power Supplies 
  • AC & DC Electronic Loads
  • Power Analysers
  • Frequency Converters 
  • Electricity Meter Testers and Calibrators 
  • Battery Element Testers 
  • Calibration equipment 
  • Safety Analysers/HiPot Testers 
  • Digital Multimeters 
  • Wound Product Test Systems
  • General T&M
  • Oscilloscopes
  • And more...

Caltest Instruments also offer the following services:

  • High level technical and applications support
  • An extensive range of demo and rental equipment
  • Comprehensive on-site and in-house service
  • UKAS calibration department
  • Finance options (lease/hire purchase)
  • Consultancy services


    Our Team have extensive knowledge in the power industry and are on hand to assist you.

    We have  Sales Engineers Based all over the country as well as applications engineers based in the office who are able to provide technical support.

    We also have a team of engineers in the Service and Calibration department which is based at our Offices in Guildford


    • 1992: Caltest founded with offices in Elstead selling Hamburg meter testing equipment.
    • 1993: Became UK and Ireland distributor for Pacific Power Source.
    • 2003: Moved service and calibration to larger facilities in Camberley.
    • 2009: Moved to large facilities in Guildford.
    • 2009: Became part of the PPST group. 
    • 2009: UKAS accreditation for calibration lab.
    • 2012: ISO 9001 accreditation achieved.
    • 2014: Introduction of our Exhibition Vehicle.


    Caltest Instruments Ltd is the proud sponsor of Team Surtes the Formula Student Racing Team from The University of Surrey. We provide assistance with test equipment and team kit. Our engineers also provide technical advice in order to improve the performance of the car.



    Customers can now get a closer look at Caltest’s power and loading solutions in the comfort of their own premises thanks to a new state of the art van launched by Caltest .



    Fully fitted out with a comprehensive range of equipment, the van is powered by a 2kW on-board generator so that you can not only view products first-hand but also experience them in action. 


             AC and DC Power Supply

             AC & DC Electronic Loads

             Oscilloscopes & N4L devices

             Frequency Converters

             Thermal Imaging

             Bipolar/Unipolar Source Sinks

             Standby Power Testing

    Attending exhibitions can be time-consuming and it is not always convenient to leave the office. The addition of our new mobile roadshow allows you to arrange a demonstration at your premises when it is convenient for you.


    Caltest personnel will be on hand to discuss your requirements and provide advice on and help in finding the right solution to suit your application.


    Need to involve other personnel? Seminars can also be arranged on request, depending on the availability of our presenters.


    Find out more. Contact us today to express your interest.

    Product Search



    Caltest Instruments Ltd

    4 Riverside Business Centre

    Walnut Tree Close


    Surrey GU1 4UG

    United Kingdom

    Tel: +44 (0) 1483 302 700

    Fax: +44 (0) 1483 300 562

    Email: sales@caltest.co.uk


    Sponsor Logo

    Caltest have been providing power sources and test instrumentation solutions for over 17 years and are proud to represent a number of industry leading manufacturers.

    Footer Logos