SKU: 67664513779

Adjustable Quick Set Bow Compass with Pencil Adapter and Extension Bar

$39.24 $43.60
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

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. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67664513779

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4.6 ★★★★★
Based on 29 reviews
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Product Reviews
J
Verified Purchase
Jamie
Boise, US
★★★★★ 5
Labs love this!!!
Style: Sport, Size: Large
Our Lab LOVES everything about this thing! Recommend getting extra durable balls as the 1 included fell apart in 1 hour. I have a very energetic Lab retriever that we have to force to stop playing ball so he does not overheat. That & the force with which you can throw this ball did not help keeping it from splitting it in 2 in less than 1 hour. This is worth the money for the extra throwing power & distance but do invest in the ULTRA strong ball for dogs like retrievers! Also, be sure to order the correct SIZE OF BALL, specific to each different size of throwing wand. My fav thing about this item is #1 the joy my dog gets from the new challenge of racing to catch longer throws, & #2 I don't have to get my hands covered in dog slobber!! He has gotten to where he can almost put it in the cup himself so I won't waste time throwing the ball again! Man, I love that dog!!! ❤️
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 1, 2023
S
Verified Purchase
Stacy H
New York, US
★★★★★ 5
Must-Have for Active Dogs!
Style: Sport, Size: Large
The Chuckit Sport 26L Dog Ball Launcher has been a game-changer for my large dog! My 80-pound Labrador loves to play fetch, and this launcher makes it so much easier and more enjoyable for both of us. The 26” length gives me the leverage to throw the ball much farther than I could by hand, which really helps burn off my dog’s energy. The included large ball (3”) is the perfect size for big dogs, and I appreciate that it’s made from durable rubber, so it withstands a lot of chewing and rough play. What I really love is that the launcher is so lightweight and easy to use. I can play fetch with my dog for extended periods without my arm getting tired. The ergonomic handle also provides a comfortable grip, which is a nice touch. If you have a large, active dog, the Chuckit Sport 26L is a must-have. It’s well-made, durable, and makes fetch more fun for both you and your dog. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 3, 2024
D
Verified Purchase
DD
Battle Creek, US
★★★★★ 5
ChuckIt is AMAZING!
Style: Sport, Size: Large
I can't throw a ball to save my soul. Just got this today and lobbed a ball to the far end of my 1- acre yard. The dog loves it, and I love it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
S
Verified Purchase
Sean
Fort Morgan, US
★★★★★ 4
I recommend using the KONG Extreme Dog Toy
Style: Sport, Size: Large
Helpful for throwing as much as my dog wants to fetch. I actually had to get a cortisone injection in my shoulder a few months after getting my dog - never had a dog with this much energy before! The Chuckit really helps. Downside: The ball that comes with it is larger than a tennis ball, so may be too much for smaller doge. I can't imagine my sister-in-law's french bulldog carrying it! Also, in our house it gets destroyed within minutes, as my dog is a strong chewer. For this situation, I recommend using the KONG Extreme Dog Toy, Black, size Large. This is shaped sort of like a snowman, which means it bounces unpredictably at times. My dog eventually chews the "head" off of this toy, but the remaining 2/3 still fits in the Chuckit (and is actually easier to throw with the "head" missing!). One caveat: the KONG is significantly heavier than the ball included with the Chuckit, so be aware of that... Also, we ordered our first Chickit in October 2015, then needed to replace it in May of 2017, as it broke. I think the plastic became brittle over that time, as we left it out in the sun & rain in Florida. Since it is cheap to replace, that's not a big deal. (We ordered three Kong toys over that same period of time!) To summarize, it's a very helpful tool to get the ball further, faster, with less strain, than without it. Knowing there are alternatives to the included ball for heavy chewers makes it worthwhile.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 19, 2017
D
Verified Purchase
DesertRoads
Battle Creek, US
★★★★★ 5
Great Ball Launcher!
Style: Sport, Size: Large
Our dogs love this ball launcher! I can throw the ball long distances without any arm strain. The balls wear out, and as described by others, tennis balls don’t fit. Buy extra balls if this is of concern. We bought a few of the “Chuck It” rubber 3” balls and they have worked well for our dogs. It’s a great value and fun for the dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2025

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