Blue Fox Tools Large Adjustable Trammel Head Set Beam Compass with Pencil Holders and Hardened Points| Includes 2 Trammel Heads & 2 Small Divider Points| Precision Marking for Woodworking

The Large Adjustable Trammel Head Set Beam Compass is a precision layout and marking tool designed for accurately measuring, marking, and scribing large circles, arcs, and radii well beyond the limits of standard compasses. Ideal for woodworking, metalworking, sheet-metal fabrication, engineering layout, and DIY workshops, this versatile trammel head set allows unlimited arc sizes when used with a custom-length beam.

These clamp-on trammel heads securely attach to wooden or metal beams ranging from 1/2 inch to 1-5/8 inch wide, giving users complete flexibility to create circles of virtually any diameter. Simply fit the heads onto a beam of your desired length and achieve accurate, repeatable layout work with ease.

Manufactured from tough cast zinc, the trammel heads offer excellent strength, durability, and corrosion resistance. Each head is fitted with hardened and ground steel points, sharp enough to scribe clean, precise lines on steel, aluminum, brass, sheet metal, plastic, and wood.

For added versatility, the hardened points can be removed and replaced with standard wooden pencils, making the set equally effective for marking wood, plywood, MDF, laminates, and other soft materials.

⭐ IMPORTANT POINTS / KEY FEATURES

• Large Radius Capability
  Designed to create large circles and arcs beyond the reach of conventional compasses.

• Adjustable Clamp-On Design
  Fits securely onto beams from 1/2" to 1-5/8" wide, allowing unlimited diameter layouts.

• Dual-Purpose Marking System
  Accepts hardened scribing points or standard wooden pencils for metal or wood marking.

• Hardened Steel Points
  Precision ground and hardened for clean, accurate scribing on steel, aluminum, and sheet metal.

• Durable Cast Zinc Construction
  Strong, wear-resistant trammel heads built for long-term workshop use.

• High Accuracy & Stability
  Provides consistent, repeatable layout results for professional and DIY applications.

• Time-Saving Layout Tool
  Faster and more accurate than improvised large-radius marking methods.

• Overall Length: 6 Inches
  Compact yet robust design for easy handling and storage.

🔧 Applications

• Drawing large circles and arcs

• Engineering layout and marking

• Woodworking and carpentry

• Metalworking and sheet-metal fabrication

• Model making and DIY projects

🔩 What’s Included

• 2 Adjustable Trammel Heads

• Removable hardened scribing points

• Pencil-holder compatibility for wooden pencils