For over 100 years, Megger has been the premier provider of electric test equipment and measuring instruments for electrical power applications. The trademark was first registered in May 1903 and is jealously guarded by the company. Although we're best known for our world famous range of insulation testers, Megger provides a full service solution to meet your electrical test and measurement needs. Our products provide testing solutions in the most critical maintenance areas including cable fault locating, protective relay testing, and power quality testing. With such a diverse product offering, we are the single source for electrical test and measuring instruments.

Tinsley, which was founded in 1904, is now part of the Hartest Precision Instruments group. Tinsley produced their first visual field analyser in the mid eighties in partnership with Dr. David Henson and has been supplying the industry ever since becoming a market leader in perimetry throughout the UK. With a wide range of products ranging from transformer testers to submarine cable equipment, Tinsley is sure to have what you're looking for.