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Speed Bow Introductory Compass with Beam Bar
Alvin Drafting$21.90Synchronized precision scissor-action thread system opens or closes legs to desired radius in one quick motion. Perfectly balanced and weighted for easy one-hand operation. Features: Creates circles... -
6" Basic-Bow Compass and Beam Bar
Alvin Drafting$27.20Designed with a fiberglass ringhead and pivot design for smooth, firm adjustment. Features: Accurate center wheel adjusts quickly Makes circles up to 10" in diameterBeam bar extension...
Description
The Bar Slide Assembly for Beam Compasses allows smooth and accurate adjustment of beam compasses. It contains a complete bar slide assembly that replaces the sliding leg part of any Alvin beam compass. It also comes with spring-loaded thumbwheels.
For use with Pacific Arc & Alvin Beam Compasses
For use with Pacific Arc & Alvin Beam Compasses
