Instrument Research and Development Establishment (IRDE)
The origin of IRDE goes back to 1939 when Inspectorate of Scientific Stores was established at Rawalpindi (Now in Pakistan). This underwent many organisational and site changes until it took the shape of Technical Development Establishment (Instruments and Electronics) covering both R&D and AHSP functions in the fields of instruments and electronics and was located at Dehradun. The Establishment, during the subsequent years, shed some of its R&D and AHSP responsibilities and came into existence, in its present form, in February 1960. Instrument Reasearch & Development Establisment (IRDE), Dehradun, is a institution devoted to research, design, development and technology transfer in the fields of sophisticated optical and electro-optical instrumentation of vital interest to the Defence Services Instruments Research & Development Establishment.