Technical Data : Magnification 32× Standard Deviation for 1KmDouble-Run Leveling : ± 1.0mm Objective Aperture : 40mm Image of Telescope : Erect Shortest Focusing Distance : 0.65m Field of View : 1° 20′ Setting Accuracy : ± 0.3″” Setting Time : ≤ 2″” Multiplication Constant : 100 Sensitivity of Circular Level : 8′ /2mm Standard Accessories : Surveying Tripod ,Adjusting Pin, Desiccating Agent, Hex Key,Plastic Carrying Case, Plumb Bob, User Manual