Product Description

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

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Rex Durometer Digital Model DD-4: Features Fill 118 Copy 1 Created with Sketch.
  • Hi/Lo tolerance limit buttons;
  • Hold/Reset buttons;
  • Solid state circuitry;
  • LCD display;
  • Optional RexLab™ Software;
  • Optional SPC printer;
  • Optional Audio attachment;
  • One year warranty;
  • Dial rotates 270º;
  • Rugged storage case;

User Manual:


Rex Durometer Digital Model DD-4: Specifications Fill 118 Copy 1 Created with Sketch.
Presser Foot:12.7 mm (0.50 inch) Ø
Dial Rotation:270º
Display:LCD, 0—100, 00.0 Resolution
Indentor:2.54 mm (0.100 inch) extension | Type M is 1.27 mm (0.050 inch)
Dimensions:57 x 156 mm (2.25 x 6.125 inch)
Weight:203 g (7.15 ounces)
Standards:ASTM D2240, ISO 7619 & ISO 868

Index Terms: Fill 118 Copy 1 Created with Sketch.

Rex Durometer, Rex Durometers, Shore hardness, pocket durometer, Shore scale, Shore A, Shore D, hardness, rubber hardness, plastic, plastic hardness, indentation hardness, ebonite, ebonite hardness, rubber hardness testing, rubber testing, hardness testing, durometer hardness, testing, ASTM D2240, D2240, ASTM D1957, ISO 868, ISO 7619, JIS K6253, JIS K6251, JIS K6252, JIS K 6253, JIS K6254, JIS K6255, JIS K6256, JIS K6257, JIS K6258, JIS K6259, JIS K6260, DIN 53505, DIN 53 505, CNS, K6898, BS 903, BS 2782, BS ISO 21509, BS EN ISO 868, GB/T 10807, Asker, Asker C, SRIS0101, MIL-STD-45622A, MIL-I-45208A, MIL-STD-120, 83.060, 83.080.01, hysteresis, creep, Young’s Modulus, DD4, dd-4.