Check For Squareness: Using wedge tips, you can instantly verify corners and diagonals for accuracy; a must-have woodworking tool for building square frames, drawers, and boxes, including a scribe tool for layout marking Premium Build Quality: Made from durable aluminum with large knurled knobs for easy, tool-free adjustment which is compatible with 3/8" rods; features carpenter compass tips and fits any bar system for extended range Multi-Function Design: Transfer inside/outside dimensions with flat tips or draw perfect circles with pencil-compatible tips; a flexible dimensional measurement tool that adapts to your adjustable diy wood measuring tool needs Versatile & Reliable: Ideal for custom cabinetry, furniture making, and shop projects. Use in tight spaces or 90° corners; a long-lasting, user-friendly woodpecker ruler upgrade with a wide adjustable circle drawing tool usability What's Included In Woodworking Ruler: (2) Bar gauge assemblies - (1) Set of beam compass tips - (2) Flat tips for transferring dimensions - (2) Angled wedge tips for checking diagonals - (2) Hex wrenches Rockler 3-in-1 Precision Measuring Tools: Rockler 3-in-1 Bar Gauge is the ultimate carpenter ruler solution for precise measurement, layout, and design. Whether you're building cabinets, furniture, or framing custom pieces, this versatile marking ruler simplifies essential tasks like checking diagonals, transferring inside/outside dimensions, and drawing perfect circles. Equipped with three sets of interchangeable tips—flat, angled wedge, and woodworking compass—this all-in-one gauge eliminates the need for multiple tools. Built from lightweight yet durable aluminum, our wood marking gauge features large knurled knobs for easy, tool-free adjustments. It fits 3/8" wooden dowels or metal rods, allowing you to create a custom tool length based on your project's size. Designed for Versatility, the angled tips reach into 90° corners for fast, accurate squareness checks. The flat tips simplify linear measurement by allowing you to transfer precise distances from one point to another. For layout and joinery tasks, the compass tips convert the gauge into a precision circle drawing ruler compatible with pencils or pens. Compact, accurate, and affordable, it brings old-school efficiency into today’s modern shop. What’s Included:(2) Bar gauge assemblies - (1) Set of beam compass tips - (2) Flat tips for transferring dimensions - (2) Angled wedge tips for checking diagonals - (2) Hex wrenches. Specifications of 3-in-1 Drawing Tools :Brand: Rockler - Weight: 0.55 - Tech Spec: Sharply angled wedge tips reach into 90° corners and other tight spaces such as 1/4'' drawer bottom dados - Beam compass/trammel points tip set works with standard size pencils and pens for scribing circles - Flat tips are perfect for transferring dimensions, especially inside dimensions - Durable aluminum body - Fits 3/8'' diameter wooden dowels or metal rods (not included) - Maximum range is determined by rod length - Large knurled knobs for easy adjustments. --- About Us: The history of Rockler Woodworking and Hardware goes back to 1954 when Norton Rockler started the Minnesota Woodworkers Supply Company in north Minneapolis. It was a small mail-order business with a big aspiration – to become woodworkers' go-to resource for everything they need to complete their projects.