Thorlabs GNL10/M goniometer stage in excellent condition. Metric version, although the micrometer is graduated in inches.

Micrometer driven, +/- 10 degree range, 1" (25.4 mm) rotation axis height. Can be stacked on top of GNL18 to build GNL20 dual-axis goniometer.

For additional information and resources, refer to the manufacturer's website.