A laser apparatus type extensometer

The invention discloses a laser convergence apparatus which comprises a laser range finder, a connecting rod, a connecting sleeve, a measuring point protective cap, screws and nuts. The laser convergence apparatus is characterized in that: the connecting rod enters into the connection sleeve. The laser range finder is placed on a pedestal groove of the range finder. The laser range finder is fixed on a range finder pedestal through screwing a screw into a range finder inner screwed hole. A screw goes through a pedestal screw hole of the connecting rod and is clamped in a screw slot. The rangefinder pedestal is connected to the connecting rod through screwing a screw into a screw hole of the range finder pedestal and screwing a nut. A handle of the connecting sleeve forms threaded connection between the connecting rod and measuring points. The laser convergence apparatus has the characteristics of simple structure, stable and reliable measurement, simple and convenient operation and low cost. Simplification and reliability of measurement are greatly improved.