Multi -point displacement meter enlarges anchor head

The utility model provides a multi -point displacement meter enlarges anchor head, includes anchor head measuring staff, pillar, pillar collet, anchor head collet, the anchor head measuring staff passes pillar, pillar collet, and anchor head measuring staff tip passes through the measuring staff fixed screw and is connected with the anchor head collet, set up the tubbiness expansion anchor head that the diameter was not less than the anchor head collet on its characterized in that anchor head collet, the tubbiness enlarges the interior powdered cementitious material who meets water and solidify that packs of staving of anchor head, the anchor head measuring staff passes the staving center. The superiority: the anchor head has obtained effectual expansion, can sparingly correspond the slipcasting link that anchor head position put. The utility model discloses realize not only making things convenient for but also swift, shorten settling time simultaneously, improve and correspond the stratum contact area, impr