Testo Limited is based in Alton, Hampshire and has been operating for 30 years as the UK subsidiary of testo AG, selling products throughout the UK and Ireland. We offer an extensive range of instrumentation manufactured to the highest standards that provide our customers with exceptional durability, functionality and ease of use. testo instruments can be purchased either direct from the UK or from a wide range of resellers and distributors throughout the UK and Ireland. Testo instruments are widely used in the following sectors: HVAC-R: heating, ventilation, air conditioning and refrigeration. Process Industry: manufacturing industries, service companies and utilities. Food Sector: including food manufacture, transport, storage, distribution and retail. Thermal Imaging: for building surveys, maintenance, electrical inspections and production monitoring.