THIS IS A HORIZONTAL HIGH TEMPERATURE VACUUM FURNACE.  THE FURNACE INCLUDES A VARIAN DIFFUSION PUMP AND A VARIAN MODEL SD 2500 MECHANICAL PUMP.  THE HOT ZONE IS HEATED BY TWO ZONES OF GRAPHITE HEATING ELEMENTS AND SHIELDED BY GRAPHITE FELT INSULATION.  THE FURNACE CAN BE BACKFILLED WITH EITHER ARGON OR N2 GASES FOR COOLING.  A BACK MOUNTED FAN FORCES THE COOLING GASES THROUGHOUT THE WORK AREA.  CONTROLS INCLUDE A HONEYWELL MICRO PROCESSOR AND DIGITAL HONEYWELL CHART RECORDER.