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REX Gage Model DD-4 Digital Durometer

The Rex DD-4 Digital Durometer is the successor to the popular Rex DD-3. With its list of features, the DD-4 is \state-of-the-art and is suited instrument for lab use. Some of the new features are a new larger LCD display, USB data ports for computer compatibility, a locking feature to prevent accidental erasure of tolerances, automatic shutoff and low battery warning.