Circa 2007 Sigma MG59g Temperature Test Chamber

This is actualy two MG59g chambers in a Sigma pioneered double stack configuration
to provide maximum productivity with a minimal footprint. The chamber also features
many other Sigma innovations including non-fog window, double trap door seals, insulating
door face frame, lift off hinged doors, and cable notches allowing for easy loading
of a fully configured and wired DUT (Device Under Test)

The double stack configuration is designed for batch
testing and/or production facilities