These are granite surface plates which were originally intended to be bases for pick-and-place units in the semiconductor industry. Therefore, they come with extremely robust bases with built-in vibration damping. They also have casters for easy moving, as well as screw jacks for leveling. Each surface plate measures 50" x 50" x 8". They feature several tapped inserts for easy holding. Each unit also comes with two granite rails, which flank the plates, with inlaid, hardened-steel ways; these were originally for gantry units. At the back of the plates, there are clearance holes drilled for passage of pneumatic lines and wires. These could be used for manufacture, metrology, and whatever else the mind may imagine. Some of these have been used as successful platforms for CMM arms, you could finish the job and make a pick-and-place unit, or you could just use it as a very nice surface plate. Please see photos.
All units are brand-new, as they were ordered by a customer who cancelled the order mid-way through completion. Some units include a few more things than others. Please contact me for details and pricing.