Coherent precision linear translation stage in excellent condition. Crossed roller bearing design, 1" travel range. Start micrometer is included. This is a line no longer being sold by Coherent, and essentially equivalent to Newport and Thorlabs.

There are 1/4 inch threaded holes in the top and larger through holes in the bottom.  the holes in the bottom would normally be used with 1/4-20 socket head cap screws to secure the base to an optical table.