English to French Science Science (general) Tensile Testing

"This 50 kN Tensile Testing System will handle the majority of the tensile and compression testing done at the Laboratory. It will incorporate large fixtures and/or involves testing of large unwieldy specimens. This machine will be used in conjunction with the lab's existing supply of grips and fixtures."

Tempted by "accessoires de préhension," but both grips & fixtures are used separately alsewhere in the text, as in "Test space is the distance from the top surface of the base platen to the bottom surface, excluding load cell, grips, and fixtures"