Patent ID: 6505495
Filing Date: 2003-01-14
Classification: G01B

Abstract:
A test specimen comprisingfour sensed elements and six connection elements, wherein the sensed elements are connected by said connection elements such that each said sensed element touches precisely three said connection elements at end faces thereof and such that the sensed elements and the connection elements together form a tetrahedron, on the comers of which the sensed elements are arranged, characterized in that the sensed elements have first respective dimensions and are formed from a first material having a first coefficient of linear expansion, and the connection elements have second respective dimensions and are formed from a second material having a second coefficient of linear expansion, wherein a combination of effects of the first material, the first dimensions, the second material, and the second dimensions results, under standard measurement conditions, in a cumulative coefficient of linear expansion between a first sensed point on a first one of the four sensed elements and a second sensed point on a second one of the four sensed elements that is essentially zero.