Sokkia B20 Automatic Level

The Sokkia B20 is a high-precision automatic optical level designed for professional elevation measurement and demanding leveling applications. As the precision model in the Sokkia B Series, it combines a 32× telescope with a field-proven magnetic-damping compensator to provide accurate and stable leveling performance.

The B20 is suitable for surveyors and engineering teams working on construction, infrastructure, geodetic control and other projects where elevation accuracy is important.

Key Features

• 32× telescope for detailed staff observation

• 0.7mm standard deviation for 1km double-run leveling without micrometer

• Up to 0.5mm accuracy when used with the optional micrometer

• Two-speed focusing knob for fast coarse and fine adjustment

• Bright optical system for comfortable observation

• Magnetic-damping pendulum compensator

• Horizontal angle measurement through the built-in circle

• Compact and rugged design for field surveying

High-Precision Leveling with a Proven Design

The B20 is the model to choose within the Sokkia B Series when leveling accuracy is the primary consideration. Its 32× telescope provides clear staff readings, while the two-speed focusing mechanism allows the operator to quickly move from coarse focusing to precise observation.

For precision leveling work, the optional micrometer can further improve the instrument's stated leveling performance. The B20 is therefore suitable for applications ranging from professional construction surveying to more demanding elevation-control work.

Core Specifications

• Model: B20

• Magnification: 32×

• Objective aperture: 42mm

• Standard deviation, 1km double-run leveling: 0.7mm

• Accuracy with optional micrometer: 0.5mm

• Minimum focus: 0.2m from telescope end

• Compensator setting accuracy: 0.3″

• Compensator working range: ±15′

• Stadia ratio: 100

• Protection: IPX6

• Weight: approximately 1.85kg

Applications

• Precision leveling

• Construction surveying

• Infrastructure projects

• Geodetic control

• Elevation measurement

• Engineering surveying

• High-accuracy site leveling