The Test House Directory brand is well established as the leading source of information about test houses, testing services and test equipment manufacturers. Now available in print, digital and online formats, these are easy to use reference sources for test and development engineers. The 23rd Edition of the Directory is now available and the mobile friendly digital edition can be viewed here. New company entries on TestHouseDirectory.com are easy to organise. For more information please contact us and we can send you an interactive pdf to complete your entry.