DE LEON SPRINGS, FL (July 30, 2013) – Sparton Navigation and Exploration (NYSE: SPA) is introducing an enhanced MEMS based sensing Inertial Measurement Unit (IMU-10), at AUVSI’s Unmanned Systems North America symposium August 12-15, 2013 in Washington D.C. Sparton’s IMU-10 has 10 degrees of freedom and provides industry leading accuracy.