About Us

Caltest has 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. 

Our team has extensive knowledge in the power industry and is 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 Petersfield, Hampshire.


Simon Harman

Managing Director

Leigh Delves

Sales Engineer

Matthew Leach

Sales Engineer

Pedro Soria

Alomoto Applications Engineer

Lucy Cooke

Sales & Marketing Administrator

Niki Jeffreys


Ian Norman

Service & Calibration Engineer

Robert Smith

Service & Calibration Engineer

Krzysztof Gawlik

Service & Calibration Manager

Company Timeline

Caltest Instruments

Relocated to larger service & calibration centre in Petersfield, Hampshire.

Caltest Instruments

UKAS accreditation for calibration lab.

Caltest Instruments

Moved to large facilities in Guildford, Surrey.

Caltest Instruments

Became UK and Ireland distributor for Pacific Power Source.

Caltest Instruments

Introduction of our Exhibition Vehicle.

Caltest Instruments

Became part of the PPST group.

Caltest Instruments

Moved service and calibration to larger facilities in Camberley.

Caltest Instruments

Caltest founded with offices in Elstead selling Hamburg meter testing equipment.