Universal shaft sensor mount - the 4B Whirligig three in one target/bracket/guard is suitable for all industry standard cylindrical or DIN style inductive sensors including the 4B M100 and M300 speed sensors. The sensor bolts to the whirligig base plate and the complete assembly bolts to the machines shaft. The installation of speed sensors is now simple, reliable and fully guarded. Shaft or machine vibration does not affect the performance of the sensor, as the whole assembly moves with the shaft. Fully guarded target for easy mounting of motion sensors.