Patent ID: 7757564

Claim:
A material testing machine, comprising: a pair of columnar members disposed on both sides of a specimen piece; a crosshead, bridging the pair of columnar members, that applies a load to the specimen piece by moving in a direction of a longitudinal axis of the columnar member; a movable member disposed at a side of the columnar member, extending in the direction of the longitudinal axis and elastically supported so as to be movable in the direction of the longitudinal axis; a striker, integrally attached to the movable member so as to be displaceable in the direction of the longitudinal direction, that is allowed to be pushed by a movement of the crosshead to a position where the striker is attached; a position sensor that detects a movement of the movable member by being pushed by the striker; a limitation member that limits the position where the striker is attached; and an elastic member that supports the striker so that the striker is capable of relative movement in the direction of the longitudinal axis relative to the movable member by a predetermined extent from a position limited by the limitation member.