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 Dryers include a digital vacuum gauge.The Dry Ice Benchtop Freeze Dryer or other freeze dryers may use the Digital Electronic Vacuum Gauge as an accessory.