Start with the news release Earth loop impedance tester does more from Martindale Electric Company, which we summarised at the time by saying "Designed to make the accurate measurement of earth loop and phase neutral impedance quick and easy, the Martindale E-Ze Test 2500 goes one stage further by offering PFC and PSC testing too.". Several months prior to that, we featured the news release Guide to clarify electrical safety regulations from Epsilon Test Services: "Simple guide has been written as a useful starting point for those who need to understand the facts about electrical safety.".
 
In July 2008, we covered the news from Martindale Electric Company - take a look at Insulation tester provides clear readings which says: "The new Martindale insulation tester has a clear display screen and suits single-handed use.".
 
Take a look also at the news release from Seaward Electronic, Installation tester meets new wiring regulations, as well as Checkbox doubles up on electrical safety from Seaward Electronic, and Time is running out on wiring regulations from Epsilon Test Services.