Goniometers rotate an object about an axis in space located outside the body of the unit (usually-above the platform), so the axis is not obscured by the unit itself. Goniometers have small travel range and greater stability, compared to rotation stages. Goniometers have to have different heights of points of rotation, so that, when you stack goniometers one on top of the other, they rotate an object about a common point in space. The mechanism rolls smoothly on ball bearings. The position is read within one revoliution on the scale evgraved on the dial knob sitting on the axle of the motor. Position can be read to each step. Overall position accounting is up-to your computer. Goniometers have two limit switched to signal an "out of limits" error situation. The switches may also be used to roughly establish a zero reference. The stage is driven by stepping motor. A dial knob on its axle allows manual drive. As standrad, we use stepping motors of these parameters: 200 steps, bipolar (4 leads), 36 Om per phase. A customer could order motors of other types. We offer our Step Motor Controller Cards 8SMCC1/3 (1 and 3 axis) to control the motorized stage.

	Lifetime 20 million full steps
	Rotates an object without obscuring the optical path
	Superb stability
	1 or 2 axes of rotation (stackable)
	Smooth operation with ball bearings
	Compact square body