Trammels are great for drawing large circles or for making marks over sizable distances.

 

The Precision Adjustable Trammel set is our finest, most robust trammel package. The set includes a fixed and an adjustable trammel, allowing you to dial in on your measurement with pinpoint accuracy.

 

• Set includes 1 fixed trammel, 1 adjustable trammel.
• Clamp opening fits 3/8” x 3/4” beam.
• Adjusting screw on trammel allows pinpoint accuracy.
• Includes pencil holder.
• Die-cast bodies with hardened and ground 3” needlepoint legs.
• Conforms to government specifications GGG-T-661b.

Precision Adjustable Trammel Instructions:

1. Use a beam 3/8” x 3/4” or smaller of desired length.
2. Slide fixed point of trammel onto end of beam and lock in position with clamp screw.
3. Slide adjustable trammel on beam within 5/8” of predetermined measurement and lock in position with clamp screw.
4. For fine adjustment, position the trammel points against a rule or tape measure. Tighten or loosen the fine adjustment screw to move the point to your specified measurement.