Abstract: Gyrocompassing apparatus for stationary equipment is disclosed which provides heading and two-axis tilt information while utilizing a minimum complement of relatively low cost components. The apparatus features a single degree of freedom gyroscope mounted to a mechanical levelling and indexing arrangement for implementing a gyrocompassing routine. Tilt information is provided with relatively high accuracy via a two-axis pendulum mechanization. A microprocessor with associated peripherals provides required control, compensation and computational functions.