known in the art laser gyro block 20 supports a gas discharge laser which causes two optical signals to counter propagate within a closed loop path the path length control transducer assembly 30 is used to adjust the position of corner mirror 70 within the laser cavity 72 thus altering the dimensions of laser cavity 72 itself adjustments to the path length of laser cavity 72 is done for two purposes a first purpose is to adjust the path length to account for changes to elements due to thermal expansion secondly adjustment of laser cavity path length is necessary to maintain maximum light intensity the path length within the laser cavity 72 is adjusted to assure the optical signals resonate at an optimum frequency thereby providing high intensity output signals to the sensors plc transducer assembly 30 is made up of driver 32 and a transducer 34 driver 32 is cylindrical member having a first planar surface 36 and a second planar surface 38 first planar surface 36 and second planar surface 38 are parallel to and opposite one another driver 32 also contains a void 40 therein which extends inwardly from second planar surface 38 in the preferred embodiment void 40 is a spherical bore cut into driver 32 as previously mentioned driver 32 is a substantially cylindrical element which has a central reference axis 42 driver assembly 32 is symmetrical about.