The WT-100 goniometric cradle provides a large aperture. These motorized goniometers are precision anglar positioners that allow the precise rotation of a work piece around a fixed pivot axis above the surface of the moving platform. They are equipped with a worm drive and a partial worm wheel. The term goniometer is derived from the Greek gonia (angle) and metron (measure).

If motion around a random, user programmable pivot point is required, multi-axis systems such as parallel-kinmeatic hexapods are available.