Uses and Features WTC-H Concrete Test Hammer for nondestructive detection structure and concrete compressive strength of the instrument. The surface hardness of concrete structures by detecting the estimated strength of concrete structures. The instrument uses a spring driven valuation bomb shells hit the hammer , shells hit one end of the rod to detect contact with the shells hit the surface of the concrete elements try the other end face, resulting in resilience in the resilience of the role of sagging collimator quotes, playing slide hammer promote their shift laser pointer vertical quasi instrument, thus Get pointer readings laser instrument vertical collimator reasonable structure, easy calibration and maintenance. small size, light weight, but to carry suitable for field testing geological compass needle 1. The main performance damping time (needle deflection 90 ° to stay in the original location time) for 30-60 seconds. 2. reading error: a) the degree of rotation of the needle before and after the indicated error is not more than 0.5 °; b) needle at 0-180 °, 90-270 ° at the eccentric caused by error of less than 0.5 °; c) of the goniometer reading error of less than 0.5 ° 3. sensitivity level: a) vial for 15 '± 3' / 2mm b) Circular level for 30 '± 5' / 2mm 4. Instrument Dimensions (L × W × H) for 85 × 73 × 35 mm. 5. The instrument weighs less than 0.27kg. Laser vertical collimator, vertical collimator, Jinke instrumentation provided by Qingdao Branch of the Instrument Co., Ltd. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) strong, credible, in Qingdao, Shandong analytical instruments industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Branch of the Instrument and you hand in hand into the brilliant, for a better future!