These Teledyne Hastings Digital DCVT-6 Controllers are used with DV-6 Tubes, Digital Output (DCVT) Ranges 1 - 999 mTorr Dual Setpoint Control Relays. The digital DCVT-6 Vacuum Measurement is the new generation series and replaces the obsolete Analog CVT thermocouple vacuum gauge controllers are matched for the DV-6 thermocouple vacuum gauge tubes (Stock Number VT-26-X-Y). They measure pressure between the range of 0.001 and 1 Torr. The Teledyne Hastings Analog CVT thermocouple controllers are self-contained instruments that offer extreme versatility for most vacuum applications. The electronic design assures long life and minimal maintenance. These controllers digital DCVT Models are ready for mounting onto a panel. Teledyne Hasting thermocouple tubes are also available but sold separately.