La description

Place of Origin: China Company: Nanjing Long Survey Instrument Co., Ltd Model: *4ND / *2ND Brand: Long Survey Manufactured meticulously according to current international standard.Auto air-damped compensator with high precision.Stronger aseismatic *****-braked rotation and endless horizontal drive.Sealed construction for use in various weather condition. Specification: Type : *4ND / *2ND Image : Erect Magnification : *4× / *2× Size of Object Lenz : *6mm / *0mm Field of View : 1°*0' Shortest Sighting Distance : 0.3m Stadia Multiplication : **0 Addition Constant : 0 Water Proof : Yes Compensator Working Range : ±*5 Level Accuracy : ±0.5" / ±0.3" Accuracy of Circular Level : 8'/2mm Dial Scale : 1° or 1 gon Standard Deviation for Double-run Leveling : 2.0mm / 1.0mm Net Weight : 1.8Kg Dimension of tripod connector : M*6 or 5/8”