1.Measurement unit: meter, decimeter 2.Wheel diameter:159mm (6" ) 3Precision leveling ground: + 0.5% 4Working environment: in Metric conversion, reading is accurate, clear, measurable area, digital display and memory function. Humanized design of all buttons, waterproof and dustproof, aluminum alloy telescopic handle has the advantages of convenient use, two molding rubber non-slip wheel design, ...