a monolithic two axis gimbal suspension system for a tuned inertial instrument includes flexure hinges which are formed monolithically integral therein to define the pivot axis of the suspension system , each monolithically integral flexure hinge having aligned pairs of skew , crossed bridges integral with the relatively rotatable gimbals of the suspension system . the suspension system is used in a dry tuned gyroscope to suspend the gyro rotor from the gyro spin shaft . a method for making the monolithic suspension system comprises electro discharge machining of a monolithic workpiece mounted on a movable mandrel . monolithically integral flexure hinges comprising skew , crossed bridges formed therein , interconnect gimbal portions which are formed in the workpiece . construction of an improved tuned gyroscope employing the monolithic suspension system in a single compartment housing is described .