Collimator System(W420-4A) For Total Station,theodolite and Autolevel

MODEL W420-4A IS THE COMBINATION OF W420-3 AND THE FOCUSING TUBE.THE FOCUSING TUBE CAN CALIBRATE THE LINE ERROR WHICH MAY OCCUR WHEN THE TELESCOPE CHANGE ITS FOCUS. HIGH PRECISION LIFTING PLATFORM.

*Main Technical Parameters:

  Tube length: 520mm

  Tube focus: 420mm

  Tube Aperture: 55mm

  Resolution: 3"

  Angle of field of view: 10°20

  Accuracy(Reticle’s division value): 30"

  Magnification: 5.7~7X

  The shortest target of the level tube: 2m

  The far target: ∞ 

  The micro adjusting range of the front/back horizontal tube: 5" 

      Horizontal: ≤10", 

      Vertical: ≤10"  

  Tubes position: 

  Horizontal(0°,20°),elevation(30°) and depresion(30°) 

       LINE ERROR OF THE FOCUS TUBE:≤0.005  

          Level accuracy: 

               Round level(On the foundation of the front column): 8"/2mm,  

               long level(On the front/back horizontal tube):20"

           Lifting range of the lifting platform: ≥320mm

       Power supply for tube: 4.5~6V,2.1W

       Switch power: 1~10A

        Lighting source: cold light (with adjustable intensity), green 

            Shipment package: 3wooden cases,140kgs,0.5cbm