Essential for engineers, carpenters, and technicians who need accurate measuring tools in woodworkshops, construction sites, and precision manufacturing environments Precision measurement aluminum alloy triangular ruler with 0-point positioning rod and double-sided scale, eliminating measuring drifts and ensuring accurate results with high precision tasks Lightweight yet abrasion-resistant construction combines quick release rods, double scale cm/inch markings and rotating alignment fence for versatile angle positioning and multi-tool functionality Innovative double positioning rod allows for bi-directional alignment, and knurled lock nut ensures preset angles of 15°/30°/45° for rapid repetitive measurement Instant calibration and bi-directional reference edge optimizes cabinet installation, structural frame layout, and mechanical drafting projects, Manufacturer: Rxgiasup