Optical Level, English: level, Level establish eye level measuring instruments elevation between ground points. The main components are the telescope tube level (or compensation), the vertical axis, the base, the foot spiral. Structured into leaning Level, Automatic Level, Laser Level and Digital Level (also known as electronic level). Divided by accuracy and precise leveling COMMON LEVEL. Level applicable to instruments Level Leveling, China Level is based instrument that can be achieved by chance and from the measured height difference per kilometer in the number of errors in the accuracy specifications division Level adjustment, is divided into four levels. Level DS models are beginning to, respectively, the 'land' and 'Level' is a Chinese phonetic alphabet, usually omitted writing letters DS. Thereafter '0.5', '1', '3', '10', etc. of the digital representation of the accuracy of the instrument. S3 S10 grade level and water level, also known as ordinary water level for the Chinese national third and fourth level and general leveling, S0.5 level and S1 level called Level precise leveling for the Chinese nation, second precise leveling : Determination of the ground water level measurement point elevation work, called height measurement. Leveling is one of the basic work measurement. Leveling Instruments and Measurement Method according to different classification used water level can be divided into leveling, trigonometric leveling, GPS height measurement and pressure elevation measurements. Leveling is the most accurate method of measuring a water level elevation models, which are widely used in national elevation control surveying, engineering surveying and construction measurement. Leveling principle is to use eye level Level provided readings erected on two points on the standard ruler to measure the height difference between two points, and then calculate point elevation determined according to the known point elevation. Level Role | Level | Branch of the Instrument by the 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 Jinke instrument into the brilliant and you work for a better future!