[Precise measurement, easy reading] Smooth metal wheel, loose finger design does not hurt the ruler, quick reading measurement, easy reading [High quality stainless steel, carefully forged ] Selection of high-quality stainless steel forging, using hardened process, never rust, more durable, longer life [Large-screen digital display, clear readings] Glass digital mirror, metric and imperial 2 modes to switch freely [Flexible measurement, fixing nut] Turn the nut to adjust the tightness, fixed measurement (clockwise , counterclockwise) [Laser scale, clearly visible] Laser engraving, fine forging process, the scale is clear, convenient and accurate readings< /p> Number of pieces delivered: 1 Specifications: 150 mm 1.5V LR44 battery (without battery) Welcome to meet ..