Dental Chair Logic F Automatic zero position + three work position Multi-articulating headrest Anatomic backrest EX Swivel right armrest Switch buttons with joystick drive Anatomic upholstery Delivery Unit 1.4 Logic P Coupled 3 hand-piece positions + 1 three way syringe Counterbalance flex arm with pneumatic lock Double stainless steel tray X-ray viewer Borden or Midwest connection