Straight Ruler, Square, Gauge manufacturer / supplier in China, offering Aircraft Aluminum PRO Set - 12” Laser-Engraved Ruler W/ Anti-Static Workshop Tools, Contractor’ S Laser Bundle - 300mm Precision Ruler + Machinist Tools W/ ± 0.05mm Accuracy, Industrial Laser Multitool Set - 12” /300mm Anodized Aluminum Ruler & Calibrated Accessories and so on.