General Pencil Protractors

No. 842:

• Carpenter quality compass is made of longlasting die-cast rust proof metal
• Spring tension adjustment for marking up to 9" (229mm) diameters
• Scribe guide for edge marking
• For use with pencil (included) or slim ballpoint pen

No. 843-1:

• Designed for marking contours and circles
• Positive wing nut adjustment
• Full-length hardened steel pin in metal frame for greater rigidity
• Constructed of brass plated steel