4路垂直矩形,水平全周,地面墨水 长度:4-way,水平全周长激光照射可能 长度(mm):220 宽度(mm):156 准确性:±1mm/10mm/10m/10m/10m/10m/10m/10m/10m 自动矫正范围:限制范围: Laser safety standard: Class 2 (JIS C6802: 2011) Light output: 1mW or less Power supply (V): 4 x AA alkaline batteries (included), 4 x AA nickel-hydrogen batteries (included), charger (included), AC adapter (included)