Sokkia Automatic Surveying & Construction Grade level. Sokkia’s NEW “Top of the Line” B20 Automatic Level 32X. B20 series automatic levels feature excellent reliability under all environmental conditions and are more tightly sealed against water, dust and humidity (IPx6). Sokkia B20 series levels are at home with a State DOT, on the construction site or in the land surveyors tool box. Meets or exceeds highway department specifications, for precise Engineers automatic levels. 7mm 1/km double run leveling. 3 second setting accuracy of the compensator. (Same or better then Leica NA2, or Sokkia’s popular B1). B Series, precise, reliable automatic Sokkia magnetic compensator with Sokkia 32x optics. The B20 series levels incorporate the most precise and reliable compensator available in the market today. Four super-high­-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock. Sokkia’s B20 automatic level, is good for for land surveyors, field engineers or contractor builders. World-Proven Precision and Durability. Optional Digital Micrometer 0M5/0M5F Parallel Plate Micrometer (B20). To achieve the highest precision with accurate level rods or staffs, the B20 model, the optional parallel plate micrometer 0M5 allows for staff readings in increments of 0.1mm (estimation to 0.01 mm). Foot version 0M5F has 0.001ft. Field of View at 100m/328ft. 1°20′ 2.3m / 7.5ft. 0.2m 7.9in. From end of telescope 0.3m 1ft. Accuracy (standard deviation for 1km double run leveling). 0.7mm 0.03in. 0.5mm 0.02in. Pendulum compensator with magnetic damping system. 103mm 4.1 in. Clampless, endless, double-sided knobs. IPX6 (EC 60529:2001). 20 to +50°C (-4 to +122°F). 1.85kg 4.1 lb.