by two orders of magnitude for miniature low power low cost navigation grade inertial systems to maintain the u201c self calibrating u201d feature a z axis gyro in one example is a class ii coriolis vibratory gyro such as a vibrating ring gyro the hemispheric resonator gyro hrg is an example of this class of gyro current hrgs while demonstrating navigation grade performance do not satisfy the low cost requirement a low cost mems equivalent of the hemispheric resonator gyro hrg in one example may be operated in a self calibrating mode and when integrated with a planar accelerometer and vibrating ring gyro in one example will form a very low cost low power navigation grade inertial system fig1 is an exploded view of one implementation of a ring resonator gyro 100 the ring resonator 102 in one example comprises a cylindrical ring with a rectangular crossection the ring resonator 102 is supported by a ring suspension 104 for example a thin walled cup or cylindrical ring suspension the ring suspension 104 is attached mechanically to the top cover 106 the spacer 108 is bonded to the top cover 106 with an intervening dielectric layer 202 dielectric layers are not shown fig1 the spacer 108 surrounds the ring suspension 104 and is bonded to and supports the drive sense electrodes 110 and sealing ring 112 with an intervening dielectric layer 204 the bottom cover 114 is bonded to the drive sense electrodes 110 and sealing ring 112 with an intervening dielectric layer 206 vias 116 are etched in bottom cover 114 and dielectric layer 206 to access the drive sense electrodes 110 fig2 is a crossection of the ring resonator gyro 100 the ring resonator 102.