A simple and compact laser Doppler radar system capable of high resolution velocity measurements of a slowly moving surface is described. The system is nondestructive and does not contact or interfere with the object whose speed is to be measured. All required beam splitting and reflective surfaces are integrated in a solid crystal block, greatly simplifying alignment. Experiments are performed using a rotating scattering wheel in which velocities as low as 0.21±0.02 mm/sec have been measured.