Adjustable Quick Set Bow Compass with Pencil Adapter and Extension Bar

Adjustable Quick Set Bow Compass with Pencil Adapter and Extension BarAn Advanced Bow Compass with Pencil Adapter and Extension Bar This adjustable quick set bow compass gives geometry students and artists a precise, well balanced tool for drawing clean circles, arcs, and larger geometric constructions. Made in Germany with durable steel components, it offers smooth squeeze lever adjustment, jointed legs, and a fine tune spindle wheel for steady control. The included extension bar expands the drawing range up to 23. 6

An Advanced Bow Compass with Pencil Adapter and Extension Bar

This adjustable quick-set bow compass gives geometry students and artists a precise, well-balanced tool for drawing clean circles, arcs, and larger geometric constructions. Made in Germany with durable steel components, it offers smooth squeeze-lever adjustment, jointed legs, and a fine-tune spindle wheel for steady control.

The included extension bar expands the drawing range up to 23.6 inches / 600 mm in diameter, making this compass especially useful for larger geometry projects, drafting, and artistic design work. The pencil adapter accepts pencils, colored leads, and ink refills up to 11 mm in diameter, allowing students to bring color, line variation, and creative detail into compass work.

This is the most versatile option in our compass collection. For a simpler first compass, see our First School Compass for Students. For an everyday precision compass without adapters, see our Quick-Set Geometry Compass.

Product Details

• Brand: Art Makes Sense / Mercurius
  
• Made in Germany
  
• Adjustable bow compass with steel joints
  
• Automatic squeeze-lever adjustment
  
• Fine-tune spindle wheel
  
• Extension bar for circles up to 23.6 in / 600 mm
  
• Pencil/ink adapter up to 11 mm diameter
  
• Rounded lead and needle tip
  
• Includes refill tips (2B, 2mm x 25mm)
  

Refill Tips Set Includes

• 15 graphite refill tips (2B)
  
• 2 mm diameter × 25 mm length
  
• Storage case
  
• Mini sandpaper strip for sharpening

Compatible with both this Adjustable Quick-Set Bow Compass and First School Compass.

Are You a Waldorfish Student?

The Waldorfish Geometry instructor recommends a high-quality, sturdy and adjustable bow compass for her course. 

Quick Set Bow Compass Spare Parts 

Spare Parts Kit (for Quick Set Bow Compass 20592140) available by request for classroom use – not listed online.

Includes 15 extra wheel nuts, 10 extra threaded rods, 10 extra pointy spikes, and 10 graphite tips in a tidy plastic box.

If you're interested in ordering a kit, just send us a message—we’re happy to help!

Safety

⚠️ WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.