Tel-Instrument Electronics Corp. engages in the design, manufacture, and sale of avionics test and measurement solutions for commercial air transport, general aviation, and government/military aerospace and defense markets. The company provides instruments to test, measure, calibrate, and repair a range of airborne navigation and communication equipment installed in aircraft on the flight line and in the maintenance shop. Its products include AN/USM-708 and AN/USM-719, which are communications/navigation radio frequency avionics flight line test (CRAFT) sets; AN/ARM-206, an intermediate level TACAN test set (ITATS); and TS-4530, an identification friend or foe (IFF) test set. The company also offers calibration and repair services for its products. It sells its products directly or through distributors to commercial airlines and general aviation businesses in the United States; and directly, or through American export agents or company's overseas distributors to government and commercial customers internationally. The company was founded in 1947 and is based in East Rutherford, New Jersey.