This precision trammel set attaches easily to a large rule or yard stick for expeditious marking of arcs and circles. The set includes two scriber points and two pencils points, with storage in the body. The steel features a reversible point for safe storage within the body.

Features:

• Set will fit any rule 1/2” to 1-1/8” thick.
• Includes 2 scriber points and 2 pencil points
  
• Storage in body.
• Reversible points for storage.
• Aluminum knurled body.
  
• Ruler not included in set.