ESE has been manufacturing products for Defense, Aerospace, Test & Telemetry applications for over 40 years! In the mid-70’s, ESE introduced two very accurate Master Clocks. These products widened ESE’s market to include 9-1-1 dispatch centers, military installations and other applications that could benefit from this level of reliable accuracy. Later in the 70’s, ESE's first IRIG-B Time Code product was introduced. Since then, the IRIG Product Family has grown considerably. The IRIG Family now includes at least 40 standard products as unique as the different government and military branches that rely on them. Through the years, ESE has also designed and manufactured products that meet precise aerospace requirements. For example, ESE offers airborne products in ruggedized enclosures that meet the 810F standard. ESE’s IRIG Time Code and Airborne & Ground Mobile products are now used in a variety of applications including government teleconferencing centers, state and local chambers, courtrooms, military test ranges and the space shuttle.