China Topcon Auto Level at-B3 Auto Level

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.

Specifications ModelB30TelescopeLength215mm (8.46in.)Magnification32xObjective aperture42mm (1.65in.)Resolving power3"Field of View
(at 100m/328ft.)1°20'
(2.3m / 7.5ft.)Minimum focus0.2m (7.9in.) from end of telescope
0.3m (1ft.) from instrument centerImageErectReticle patternWedgeStadia constant0Stadia ratio100Focusing knob2-speedSighting aidPeep sightLens hoodRetractableAccuracy (standard deviation for 1km double run leveling)Without micrometer0.7mm
(0.03in.)With micrometer0.5mm
(0.02in.)CompensatorTypePendulum compensator with magnetic damping systemSetting accuracy0.3"Working range±15'Circular levelSensitivity10' / 2mmMirrorPentaprismHorizontal circleDiameter103mm (4.1 in.)Graduations1° / 1gonGeneralHorizontal motion driveClampless, endless, double-sided knobsWater resistanceIPX6 (EC 60529:2001)Operating temperature-20 to +50°C (-4 to +122°F)Width130mm (5.12in.)Length215mm (8.46in.)Height140mm (5.51in.)Weight1.85kg (4.1 lb.)