The DD-5 digital durometer is the latest innovation for performing timed hardness testing from Rex Gauge Company Inc. The new DD-5 is equipped with an internal adjustable timer and onscreen countdown that can be set to a desired elapsed time from 0-30 seconds. When enabled, the timer function will be automatically activated when the presser foot meets the test specimen. Up to 200 readings can be stored and viewed inside the durometer or downloaded through the USB port.


  • Adjustable Measurement Timer with Onscreen Countdown
  • Store and View up to 200 Measurements
  • Download and Collect Data Using USB Smart Cable
  • Set Tolerance Limits
  • Manufactured in Accordance with ASTM D2240 Specification
  • Includes NIST Calibration Certificate
  • Custom Made Carrying Case
  • Solid state circuitry with LCD display
  • Batteries Included
  • Response speed is immediate
  • Holds reading until reset
  • Dial rotates up to 270°
  • Extra-Large Number Display