Some of the components in Olympus BX2M microscope including the superwide trinocular head (above) for OEM applications
Swivel trinocular head has a development history at Olympus, going through 3 generations from this oldest version to superwide head above it.
Olympus motorized nosepiece (above) uses a Geneva gear mechanism to advance the objectives via a miniature motor. The actual positioning of the turret is achieved by a mechanical detent; The mechanical play in the system allows the detent to take over after the motor stops.