Adjustable Clamp-On Trammel Head Set – Beam Compass for Large Circles & Arcs | Cast Zinc Heads with Pencil Holder & Hardened Steel Points

• 📏 Draw Unlimited Arcs: Create large circles and arcs beyond standard compass range using your own custom-length shop-made beam.
• 🪚 Adjustable Clamping Range: Fits securely on wood beams from 1/2 inch to 1-5/8 inch wide for flexible use.
• ✏️ Dual Functionality: Includes two trammel heads with removable points that also accept standard wooden pencils.
• ⚙️ Durable Build: Made from tough cast zinc for long-lasting reliability in workshops and job sites.
• 🔩 Hardened Steel Points: Sharp, hardened tips allow accurate scribing on steel, sheet metal, aluminum, and more.

The Adjustable Clamp-On Trammel Head Set is the perfect solution for measuring, marking, or scribing circles and arcs that go beyond the range of a standard compass. By attaching the heads to any custom-length beam (wood bar between 1/2" to 1-5/8" wide), you can easily create large, precise arcs and circles for woodworking, metalworking, or drafting projects. This set includes two trammel heads made from durable cast zinc, designed to last through years of use. Each head comes with removable hardened steel points, ground sharp for scribing on steel, sheet metal, aluminum, and other surfaces. Both heads also accept standard wooden pencils, making them versatile for both marking and layout work. Compact yet powerful, this trammel set is a must-have tool for carpenters, machinists, metalworkers, and DIY enthusiasts who need precision marking on a larger scale.