For sale is a HUGE Vacuum Cooling Environmental Test Chamber. Dimensions 17ft long,60 inch outside diameter, 53 inch inside diameter. All dimensions are APPROXIMATE and subject to buyer verification. It was used by ISR Goodrich/Recon Optical to test optical spy camera assemblies used in spy planes and spy satellites. It has a sight glass, a big opening on one end, and a smaller opening in the middle. It also has a bunch of electronics and valves attached. It is up to the buyer to determine how to use it and what you need to make it work -- I cannot guarantee any electronic or other attachments, cables, connectors, etc. This chamber was located inside of a scientific lab and was only used for occasional tests. In separate listings, I have listed vacuum pumps and other control items that were in the same lab. No vacuum pump or cooling equipment is included with this chamber, they are listed separately. Ihave a 15 HP Beach Russ vacuum pump[IT WAS SOLD] and several smaller pumps as well, and also refrigeration equipment, all coming from the same lab. Ialso have a smaller chamber for sale as well, check my other listings (IT WAS SOLD!). Freight shipping by flatbed truck only. Delivery in Chicagoland is available for a separate fee.