Up for sale is a Kinetic Systems brand Vibraplane #5704 optical breadboard table with pneumatically stabilized base.
This table measures 55" x 48" and is 4" thick. It has two pass-throughs for cords or laser collimators, etc. The cutouts are a ~12" square and a ~6" circular cutout. These were done at the factory and are part of the table -- it is properly sealed and braced for the holes, so it does not lose any rigidity. The breadboard holes are threaded M6-1.0 and are on 1" centers.
The base is part #9102-32S-86SPL. It has been fully tested and works completely to factory specs. It floats nicely and has appropriate damping. You can float it using a compressor or an air/CO2 tank.
This table is located at my warehouse in El Cajon. I am happy to demonstrate it for you if you want to come by and check it out. I can also help arrange delivery or palletize it for shipping should you not be local.
When new, the cost was over $6000. I'm selling this one for just $1200. I can accept cash or Venmo.
Contact me if you'd like to set up a time to come see it!