The Teledyne Hastings DVT-4 features a precision A/D converter along with a microprocessor to measure the thermocouple vacuum gauge tube’s signal output. The microprocessor converts the measurement to a pressure reading by employing the gauge tube’s well-defined output/pressure relationship. The result is displayed using a bright 3-digit green LED display. The DVT-4 are packaged in an 1/8 DIN case which can be panel mounted.