Telescope ImagingErect image Objective aperture 45 mm Magnification 30 x Resolution ≤3” “”Field of view 1° 30’ Shortest focusing distance1.35 m Stadia multiplication constant 100 Stadia addition constant 0 Angle measurement Angle measuring mode Absolute encoder Angle measuring accuracy 2” Angle display 1”/5” Angle unit 360°/400G Compensator Tilt sensor Automatic vertical compensation Compensation range ± 3’ Display unit Two-sided Optical plummet ImageErect “”Magnification 3 x “” Angle of vision 3° Focusing range 0.5 m ~ ∞ Sensitivity of tubular vial 30”/2 mm Sensitivity of circular vial 8’/2 mm Dust & Water Protection IP44 Standard Accessories : Tripod Stand, Prism Pole & Instruction Manual Telescope ImagingErect image Objective aperture 45 mm Magnification 30 x Resolution ≤3” “Field of view 1° 30’ ” Shortest focusing distance1.35 m Stadia multiplication constant 100 Stadia addition constant 0 Angle measurement Angle measuring mode Absolute encoder Angle measuring accuracy 2” Angle display 1”/5” Angle unit 360°/400G Compensator Tilt sensor Automatic vertical compensation Compensation range ± 3’ Display unit Two-sided Optical plummet ImageErect “Magnification 3 x ” Angle of vision 3° Focusing range 0.5 m ~ ∞ Sensitivity of tubular vial 30”/2 mm Sensitivity of circular vial 8’/2 mm Dust & Water Protection IP44 Standard Accessories : Tripod Stand, Prism Pole & Instruction Manual