Jackson #19 Multi-Trammel Heads, model SUW-14785, provide a circle-marking setup using a tube as the compass bar. Cast radius-setting points align with the marking pointer, while square backs support perpendicular positioning. A stationary head carries the case-hardened centre point. The included Allen wrench, soapstone and scribe support setup and marking, with the tube length determining the diameter that can be marked.

• Cast radius-setting points positioned in line with the marking pointer.
• 1/4” screws and square-backed heads for perpendicular alignment.
• Stationary head fitted with a 1/4” case-hardened centre point.
• Circle marking from 1 1/2, with the maximum diameter governed by compass-bar tube length; pipe diameter: all.
• Includes Allen wrench, soapstone and scribe.