Deflectometrs and Specialty Extensometers


  • Model 3540 Deflection Gages

Widely used for measuring deformations in three and four point bend tests, compression tests and a variety of general purpose deformations. These strain gaged devices come with a magnetic base for easy mounting. Download Data Sheet PDF

Specialty Extensometers

Five models dedicated for particular application and tests

  • Model 3565 Bolt Extensometers for Proof Load Testing
    Designed for measuring small measuring strain ranges as required for proof load testing of bolts and similar applications such as yield measurement. Download Data Sheet PDF
  • Model 3567 Rebar Coupler and Rebar Splice Extensometers
    Extensometers for measuring elongation of rebar coupler, splice, and sleeve assemblies. Download Data Sheet PDF
  • Model 4013 Averaging Extensometers for ASTM D5656 Shear Tests
    Designed specifically for performing tests in accordance with ASTM D5656, Standard Test Method for Thick-Adherend Metal Lap-Shear Joints for Determination of the Stress-Strain Behavior of Adhesives in Shear by Tension Loading. The deformation is measured on opposite sides of the test specimen and the output is an average of the two readings. Download Data Sheet PDF
  • Model 3421 Sandwich Core Shear and Rigid Cellular Plastic Shear Testing Extensometers
    For measuring shear properties of sandwich cores to ASTM C273. Simple clip-on design attaches in seconds and provides repeatable test results.Download Data Sheet PDF
  • Model 4030 Submersible Extensometers
    The Model 4030 extensometer uses a special LVDT-like sensor to measure strains on samples submersed in water or other compatible liquids. The unit is provided with the signal conditioning electronics. The extensometer is a semi-custom design, which is available in smaller measuring ranges up to 5 mm (0.2 inches). Clip-on (COD) style designs are also available. These are made entirely of stainless steel with Teflon cables. They can also be supplied with ceramic knife edges and heat shrink tubing over the quick attach kit wires, to eliminate any galvanic corrosion issues with test samples. Download Data Sheet PDF