Vintage laboratory surplus unit. The clear plastic cover over the face of the Temperature Meter is completely missing, leaving the internal needle gauge exposed. The rest of the front interface, knobs, switches, and the specimen viewing window are physically intact. This item is completely untested and lacks the necessary hookups or liquid carbon dioxide lines to check function. Sold strictly AS-IS, for parts, repair, or restoration. (However, is surplus from the university of Missouri and is in impeccable shape, I am certain the missing cover was lost in transport. This unit has 99 % chance of working exactly as it should) Lightweight unit, shipping should be reasonable.