The SQ Series Kilns were made from about the mid 1980's until around 2000. They were square, mostly manual with an externally mounted Dawson Kiln Sttier/Timer, had a wrap around stainless steel case, an air space inbetween the stainless case and the brick whcih was ventilated by the first kiln vent (predating the Orton Vent technology) and an original counterblanaced lid system that predates any of the designs on the market today.
We highly recommend that any older kiln, especially one over 25 years old, be evaluated by a competent professional for safety.
For old instructions, new instructions that may apply and old literature click on this link.