3-point extensometer

摘要

For repeatable field test of the test object or other equipment, and an equipment installation system, and an inner surface defined at least in part by the frame of the frame, and. Object three contact points are disposed on the inner surface just, object contact points of these three, to define a plane. The frame, the frame comprises two arms and an arcuate portion; frame assembly defining a surface of the generally concave and; frame assembly comprising a frame ring-shaped multiple; frame ring-shaped; frame having two arms and a base can be selected from the group consisting of.