Features 1. It can allow the test in a different direction, and can even be used in a constant temperature water bath; 2. With digital display depth measuring mechanism, easy to use, good repeatability and high accuracy; 3. Bracket move fast and fretting two kinds of speed, ease of test operation of the tip of the needle at the surface of the sample; 4. It has a table level adjusting mechanism, and easy to adjust; 5. With manual release pin into pieces of bodies, to ensure that in the not automatically controlled release, still normal operation.