Thurlby Thandar Instruments Limited (trading as AIM-TTi) is a prominent British designer and manufacturer of electronic test and measurement instruments, founded in 1979 by John Thurlby. Headquartered in Huntingdon, Cambridgeshire, UK, the company operates from a purpose-built facility encompassing R&D, manufacturing, and calibration services. AIM-TTi’s core business focuses on precision benchtop instruments for laboratory, educational, and production environments. Its product portfolio includes a wide range of DC power supplies, with notable series such as the QL, MX, PL, and CPX offering linear and mixed-mode regulation with low noise. The company also produces electronic loads, function/arbitrary waveform generators (e.g., TG1000 and TG5000 series with direct digital synthesis), RF signal generators up to 4 GHz, frequency counters, and digital multimeters. AIM-TTi is recognized for its advanced SMT manufacturing and in-house calibration traceable to UK national standards, ensuring high reliability. In the global test equipment market, AIM-TTi holds a strong niche position as a leading European brand, competing with Keysight and R&S in mid-range segments. Its instruments are widely adopted in automotive, aerospace, and semiconductor R&D for their precision and competitive pricing. The company emphasizes continuous innovation, with recent launches like the MX-Q series modular DC supplies, and maintains a strong distribution network across over 60 countries.