Professional Smooth Surface: Crafted from premium aluminum alloy and CNC-machined for precision, the ruler features laser-engraved numerals that remain legible after tens of thousands of uses. The anodized surface is wear-, rust-, and scratch-resistant, yet thick enough for durability while staying light and never bulky. Slider with Positive Stop: A precision-machined notch at the end acts as an instant marking gauge—set your stop, drop a pencil in the notch, and mark. A sturdy stop block locks firmly to the rule with two knurled thumb screws. Slide it off, pass it through any slot in the ruler blade, and secure it at any position to prevent creeping—ideal for repeatable cuts across multiple boards. Easy to Use: Provides a highly accurate reference and lets professional woodworkers set up accessories in seconds. Compact for tool-bags or hangs on the wall for quick storage. Vertical T-Track Function: For vertical measurements, slide the stop off the end and insert it into the slotted blade to create a self-standing T-rule. Side markings at 1/4, 1/2, and 3/4 depths satisfy a variety of layout needs. Three Convenient Sizes: Set includes two each of 6 in / 160 mm, 8 in / 210 mm, and 12 in / 300 mm rulers, each with an integrated slider. Perfect for woodworking, DIY projects, and crafts—the ideal measuring and marking tool for any carpenter., Manufacturer: Zhjiutak