Portable meter for absolute vacuum pressure measurements in hospital labs, crystal growing, solvent recovery, distillation, and rotary evaporation. Also used in HVAC, automotive and other industrial applications. Includes a detachable heavy-duty probe with ¼ PS connector for liquid, air, oil and gas. Features a large display with eight units of measure, min-max, hold, low battery indicator, auto power off and an RS232 computer interface. Comes ready to use in a foam-lined, hard-shell carrying case, with 9V battery and instructions.