English to Polish Tech/Engineering Materials (Plastics, Ceramics, etc.)

CAPSTAN (OR ROLLER) TYPE OF GRIP (uchwyt wałkowy/rolkowy)
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Elongation, however, can no longer be read directly from the testing machine's crosshead movement. This necessitates the use of an external measuring device such as a linear variable differential transformer (LVDT), laser sensor, or infrared sensor. Most use a ***100-mm gauge distance*** located in the center of the test specimen between the roller grips. This output is fed into an x-y recorder (...)