Digital Electronic Vacuum Gauges provide an LCD display of vacuum measurement in mBar, PA or Torr. Range is 0.02 mBar to 5 mBar. Stainless steel casing. Includes a cord with 3/8" to 1/2" OD adapter for connection to either vacuum tubing or a valve on a drying chamber. All FreeZone Freeze Dry Systems include a digital vacuum gauge. The Dry Ice Benchtop Freeze Dry System or other freeze dryers may use the Digital Electronic Vacuum Gauge as an accessory.