Video extensometer

Tinius Olsen video extensometer is designed for the exact, non-contact measurement of specimen strain and comes with various configurations. This is a single camera configuration that uses a particular lens that is ideal for gauging low strain values with very high precision. Its specifications include a greater resolution of better than 1/100,000 of lens FOV, a high system accuracy of 0.5%, and an automatic gauge search and find. It has the ability to use both longitudinal and transverse multiple gauge lengths. A cool lighting source is included so that strain point tracking is not lost due to changes in ambient conditions. Preparation of the test specimen is quick and easy. Any visible marking can be used for pattern recognition, and these can be natural patterning on the specimen surface, pen marks, blob markers, punched gauge marks or a sprayed speckle pattern.