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Long distance extensometers

In the field of tactile strain measurement, Hegewald & Peschke sells long distance extensometers as fine strain and/or coarse strain measurement systems. These extensometers are in direct mechanical contact with the specimen and can be used to measure extension up to breakage. Depending on the type, the devices have a high measuring resolution of up to 0.01 µm. They are applied manually or automatically before the start of the test and are used to determine elastic parameters, yield strengths, proof stresses, uniform elongation and elongation at break.


  • direct extension measurement
  • variable initial measuring length from 10 mm to measuring travel
  • excellently suited for strain control in tensile tests
  • large maximum measuring travel for determining the properties up to specimen break, even with soft plastics/elastomers; also suitable for determining elastic parameters such as yield and equivalent yield strengths
  • automatic positioning and removal of the measuring arms possible
  • use in temperature chamber possible (special measuring arms)
  • Various cutting systems possible (round/angular, carbide, blunt, rubberized)

Metal tensile test on round specimens with fully automatic MFX 200 long-travel extensometer

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