• Features
  • Specifications

B20 B30A B40A

    World-Proven Precision and Durability
     
    Sokkia B Series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
     
    Precise, Reliable Automatic Compensator
    Superior Telescope
    Quick Collimation
    Horizontal Angle Measurement
    Stadia lines on the reticle allow distance measurements
    Rapid, East Setup
    Easy to Adjust

B20 B30A B40A

Specifications
  B20 B30A B40A
Telescope
Length 215mm (8.46in.) 214mm (8.42in.)
Magnification 32x 28x 24x
Objective Aperture 42mm (1.65 in.) 36mm (1.42 in.) 32mm (1.26 in.)
Resolving Power 3" 3.5" 4"
Field of View (at 100m/328ft.) 1°20' (2.3m / 7.5ft.) 1°25' (2.5m / 8.2ft.)
Minimum Focus 0.2m (7.9 in.) from end of telescope 0.3m (1ft.) from instrument center
Image Erect
Stadia Constant 0
Stadia Ratio 100
Focusing Knob 2-Speed 1-Speed
Sighting Aid Peep Sight Gun Sight
Accuracy (1km double run leveling)
Without Micrometer 0.7mm (0.03 in.) 1.5mm (0.06 in.) 2.0mm (0.08 in.)
With Micrometer 0.5mm (0.02 in.) n/a
Compensator
Type Pendulum compensator with magnetic damping system
Setting Accuracy 0.3" 0.5"
Working Range ±15'
Circular Level
Real Time Data Output Sensitivity 10' / 2mm
Horizontal Circle
Diameter 103mm (4.1in.) 99mm (3.9in.)
Minimum Division 1°/ 1gon
General
Water Resistance IPX6 (IEC 60529:2001)
Operating Temperature -20 to +50ºC (-4 to +122°F)
Weight 1.85kg (4.1lbs.) 1.5kg (3.3lbs.)
Size Width 130mm (5.12in.) 122mm (4.8in.)
Length 215mm (8.46in.) 214mm (8.4in.)
Height 140mm (5.51in.)