Feedback Instruments Ltd started in 1958 by lecturers from Imperial College, London to build devices that would help students to learn and understand the concepts of engineering. We have been supplying laboratory equipment to over 100 countries to help lecturer’s bring life to their lab so students understand the what, when, where, how and why of engineering principles. Since May 2012 Feedback became a part of the LD DIDACTIC Group. LD DIDACTIC is a worldwide leading manufacturer of premium science and engineering equipment for academic education and vocational training for over 160 years. LD Didactic distributes products and solutions under the brand Leybold. As Feedback we supply and support all three brands of the LD Group: FEEDBACK, LEYBOLD & ELWE in the United Kingdom with our own inhouse technical team bringing you direct contact and assistance.