Model # E-LAS

Laser extensometers perform high precision non-contacting strain measurement in materials testing. They use a high speed laser scanner to measure the spacing between reflective tape strips mounted on the test sample. The measurement range for ELE-01 is from 0.3 to 3.2 inches (8 to 81 mm) and 0.3 to 5 inches (8 to 127 mm) on the ELE-05, and 0.3 to 15 inches (8 to 381 mm) on the ELE-15. The gage length is determined by the user. This allows high elongation measurements when shorter gage lengths are used. The high resolution also allows accurate measurements of smaller strains.

The self-contained extensometer uses state-of-the-art laser diode technology. A digital display is included. The analog output may be used to connect to existing test controls. The RS-232 serial communications interface provides two way communications. Operation may be local or remote. The scanning beam is always perpendicular to the specimen, unlike most laser extensometers. This eliminates errors when viewing through windows in chambers. It also minimizes sensitivity to the distance between the extensometer and the sample. Because the unit measures reflected light, no receiver is required behind the sample.


  • Non-contacting design requires only reflective tape marks on the specimen, or clip-on reflectors s.
  • Ideal for use in chambers-calibration not affected by aiming through viewing windows. High resolution of 1 micron.
  • Full 3.2 inch (81 mm), 5 inch (127 mm), or 15 inch (381 mm) measuring range allows high elongation measurements (e.g. 200% on a 1 inch gage length).