1. geological compass needle damping time (needle deflection from 90 ° to stay in the original position of the time) from 30 to 60 seconds. 2. reading error: a) the degree of rotation of the needle before and after the error indication is not more than 0.5 °; b) needle at 0-180 °, 90-270 ° arising at the eccentric error of less than 0.5 °; c) a goniometer reading error of not more than 0.5 ° 3 levels sensitivity:. a) vial of 15 '± 3' / 2mmb) Circular level of 30 '± 5' / 2mm4 Instrument Dimensions (L × W × H) 85. × 73 × 35 mm. 5. The instrument weighs less than 0.27kg. Laser marking instrument laser marking instrument (4V1H1D) laser marking series of products, based on its auto-leveling, simple, economical and practical features, is widely used in interior decoration, installation of doors, windows and cabinets, ceiling, wall charts, and other professional and DIY markets vertical collimator maintenance, providing horizontal and vertical alignment. Features: 5 line lasers and plumb before 1:00 the next laser, 2 cross line laser continuous or pulsed laser laser vertical collimator, indoor and outdoor use either automatic Anping, over-range alarm alarm function can be shielded, 360 ° tilt at any angle using the body rotation Technical Specifications: Laser wavelength: 635nm Laser class: ClassII laser accuracy: ± 1mm ??/ 5m Anping range: ± 3 ° Working temperature: -10 ℃ ~ + 45 ° C Power: 4 5 # battery (or external power supply DC6V) low pressure Tip: Power LED flashes Size: Φ100 × 216mm Weight: 1.22Kg directed a total station, one of which set up the station down device, mounted Total Station, point to put another prism; 2. Click on the data collection, enter the station (that is, put the instrument point) coordinates and instrument height, click Next; 3, enter directional point (just do not stand a little instrument) coordinate, lose not lose prism height will do. 4, instrument pointing to a prism, tap Measure to look at the difference between the coordinates and the coordinates of the input point is displayed so big import vertical collimator, is not the case the orientation is completed. Repeat steps 2 and 3 too different. Second, the mapping a determined prism height, adjusted according to the terrain. 2, the prism height input instrument, prism tree at the unknown point, tap Measure to save coordinates. 3, continue to measure, click op. 4, the mapping is complete, export the data, with cass mapping, just fine. Three: Note 1, Note prism height and prism consistent high input together; 2, the instrument needs to be redirected off; 3, do not see the point to set up transfer stations up to two stations. Vertical collimator offer, vertical collimator, Jinke instruments provided 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!