Accurate Marking: To ensure accurate marking, use this brass wheel marking gauge with an engraved graduated ruler that displays both metric and imperial measurements. Accurate Cutting Wheel Adjustment: The marking wheel is equipped with a micro-adjustable fence with 2 thumbscrews. This makes it easier for you to measure accurately. Anti-Roll Design: Prevents this wheel marking from rolling off your workbench. It features an anti-roll brass fence with 2 flat points on the head to prevent the meter from rolling. Easy to Adjust: The marking tool is equipped with sturdy knobs that ensure easy adjustment. The post has a V-shaped slot that prevents the fence and tail from moving or moving during use. Note: The data are all measured manually, please allow 1-3cm error, due to differences in light and display, there may be some color differences, please refer to the actual item received.