A vibratory gyroscopic device to determine the rotation rate of an object
and method of manufacturing thereof, the device including a plurality of
supporting springs arranged in pairs to exhibit bilateral symmetry via
each pair (i.e., mirror-image symmetry) relative to each other such that
the asymmetries in the characteristics of the ring (e.g., resonant
frequency, response to angular velocity), caused by asymmetries in the
structure of the ring, are reduced.