This instrument is dedicated to the precision testing and adjusting of the autolevel, theodolites and total station.

*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"
  Magnification: 5.7~7X
  The shortest target of the level tube: 2m
  The far target: ∞
 
Equiped with a micrometer on the tube for the testing of the high precision autolevels.
Equiped with a micro-adjustable platform.