Ebner Furnaces Vacuum Annealing. By Andy Johnson Model Pacer 1, Induction Furnace (10729) Vacuum Processing, 2004, Batch Type, Annealing Furnace (11115) Stainless Steel Tube Annealing Furnace (11699) FURNACES, BELL TYPE 48" Dia x 98" H., Ebner, 1992, Bell Anneal Furnace (11688) 62" Dia x 114" H., Ebner, The use of oxygen activity