Features: Precision-Parallelogram Design: Engineered with an innovative parallelogram mechanism that ensures accurate center alignment. Effortless Mortise & Tenon Centering: Removes guesswork for woodworking joints. The precision-machined parallel arms adjust smoothly to material thickness, positioning the marking bar at the exact midpoint. Scribe both sides of the bar for perfectly centered lines. Instant Center Line Marking: Place the gauge on any wood edge, squeeze the sides, and the self-centering bar quickly identifies the midpoint. Ideal for marking center lines on boards, dowels, or sticks with speed and accuracy. Versatile Workshop Companion: Suitable for plate grooving, pin joints, assembly alignment, drilling reference lines, mortises, rabbets, and more. Constructed from durable stainless steel and aluminum for long-lasting performance. Notice: 1. Actual color may vary slightly due to different lighting conditions. 2. Please allow 1-3 cm variation due to manual measurement. Material: Aluminum + Stainless Steel Weight: 420g-450g Product Size: 10x15 cm Package List: 1 Set Center Gauge