SOKKIA B20 Auto Level 32X with Micro-Adjustment - Reliable China Suppliers & Factory for Precision Surveying Tools
Japan brand 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.
Superior Telescope
Optimally designed telescope provides exceptionally bright and sharp view that reduces operator's eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope makes it easiest to use in confined locations.
Quick Collimation
Two knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming. Horizontal Angle Measurement Horizontal angles can be read in 1° or 1 gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base - directly below the eyepiece.
Stadia
The stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
Easy To Adjust
Reticle adjustment is made with one screw. Circular levels vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
Technical Specifications
| Model | B20 |
| Telescope | |
| Length | 215mm (8.46in.) |
| Magnification | 32x |
| Objective aperture | 42mm (1.65in.) |
| Resolving power | 3" |
| Field of View | 1°20' |
| At 100m/328ft | (2.3m / 7.5ft.) |
| Minimum focus | 0.2m (7.9in.) from end of telescope |
| 0.3m (1ft.) from instrument center | |
| Image | Erect |
| Reticle pattern | Wedge |
| Stadia constant | 0 |
| Stadia ratio | 100 |
| Focusing knob | 2-speed |
| Sighting aid | Peep sight |
| Lens hood | Retractable |
| Accuracy (standard deviation for 1km double run leveling) | |
| Without micrometer | 0.7mm |
| (0.03in.) | |
| With micrometer | 0.5mm |
| (0.02in.) | |
| Compensator | |
| Type | Pendulum compensator with magnetic damping system |
| Setting accuracy | 0.3" |
| Working range | ±15' |
| Circular level | |
| Sensitivity | 10' / 2mm |
| Mirror | Pentaprism |
| Horizontal circle | |
| Diameter | 103mm (4.1 in.) |
| Graduations | 1° / 1gon |
| General | |
| Horizontal motion drive | Clampless, endless, double-sided knobs |
| Water resistance | IPX6 (EC 60529:2001) |
| Operating temperature | -20 to +50°C (-4 to +122°F) |
| Width | 130mm (5.12in.) |
| Length | 215mm (8.46in.) |
| Height | 140mm (5.51in.) |
| Weight | 1.85kg (4.1 lb.) |
Frequently Asked Questions (FAQ)
What is the water resistance rating of the Japan brand B series automatic levels?
The B series levels feature tough and compact bodies that are tightly sealed against environmental hazards, achieving an IPX6 rating (EC 60529:2001) for superior protection against water, humidity, and dust.
What is the minimum focus distance of the B20 automatic level?
The B20 features an ultra-short focus distance of 0.2m (7.9in.) from the end of the telescope, making it exceptionally easy to use in tight and confined locations.
How is horizontal angle measurement performed?
Horizontal angles can be read in 1° or 1 gon units using a freely rotatable circle that allows angle readings from zero. The readout window is conveniently located on the instrument base directly below the eyepiece.
How do you use the stadia lines for distance measurements?
The stadia lines on the reticle allow for quick distance measurements. You simply multiply the staff length between the top and bottom stadia lines by 100.
Is the instrument easy to adjust in the field?
Yes, adjustments are simple and fast. Reticle adjustment requires only one screw, while the circular level vial is adjusted with two screws. Both can be quickly completed using the provided tools.
What type of compensator does the B20 use?
The B20 automatic level is equipped with a pendulum compensator featuring a magnetic damping system, offering a setting accuracy of 0.3" and a working range of ±15'.