F550/TD-4 is for calibration and maintenance of the autolevel,theodolite,ttotal station and laser/optical plummet.

*Main Technical Parameters:

  Tube length: 565mm

  Tube focus: 550mm

  Tube Aperture: 57mm

  Resolution: 3"

  Angle of field of view: 10°20'

  Accuracy(Reticle’s division value): 30"

  Tubes position: Horizontal(0°),vertical(90°),elevation(30°) and depresion(30°) 

  Adjusting range of the tubes: Horizontal:≥60´, Vertical:≥60 

  Magnification: 5.7~7X

  The shortest target of the level tube: 2m

  The far target: ∞ 

  Lifting range of the lifting platform: 300mm

  Max. Loading weight on support column: 40kgs

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

  Power supply for tube: 4.5~6V,2.1W

  Switch power: 1~10A

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

  Dimension: Length110cm,height235cm,width42cm 

  Shipment package:3wooden cases, 240kgs,0.885cbm