The SIMMONDS Precision Field Calibration Unit is a top-of-the-line instrument designed for aircraft capacitance fuel gauge calibration. Made by the reputable brand SIMMONDS in the United States, this unit is a precise and reliable tool for ensuring accurate fuel level measurements in aircraft. Its field calibration capability allows for on-site calibration, making it convenient and efficient for aviation professionals. With a focus on quality and performance, this unit is essential for maintaining the precision and safety of aircraft fuel systems. No patch cords. Just a nice wooden box and what is pictured inside the box