How can a compass with 12" legs measure 30" between the points like in the picture?

It only needs to have 15" between points to make a 30" circle. 12" legs achieve that less than 90° open.

Will this accommodate a paint marker, larger than a pencil?

The holder for the pencil is about the size of a standard pencil, so I would say no. I suppose you could tape the marker to it, but it won't fit in the holder.

How do you get it to open. I received mine in the mail today and I can’t get it to spread apart

All you have to do is to simply spread it apart as needed. You may have to use a little pressure. One thing that could cause trouble is the little black locking nut on the top. Make sure it is loose first Just turn it counter-clockwise to loosen it. To fit a regular number 2 pencil in the holder, you may have to sand it down a little.

Great Compass , but we’re missing the two set screws 😥

The carpenter's 12" compass I received lacked the locking and pencil retention screws necessary for its use. I e-mailed the Mr. Pen folks to request the screws early that evening. They responded via e-mail around three the next morning apologizing for the problem and stating that if I'd send them my Amazon order number they would be happy to send me a new compass. I did so and received notification that my order had shipped that same day. Two days later I received my new compass. No hassle and prompt, cheerful customer service make this a great outfit to do business with. And yes, the product was of great quality.

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Mr. Pen- Professional Large Compass for Woodworking, 12 Inch Compass with Wing, Compass for Geometry, Compass Drawing Tool, Woodworking Compass, Pencil Compass for Carpenter, Drafting, Drawing Compass

Mr. Pen- Professional Large Compass for Woodworking, 12 Inch Compass with Wing, Compass for Geometry, Compass Drawing Tool, Woodworking Compass, Pencil Compass for Carpenter, Drafting, Drawing Compass

Product ID: 500580908

Details

Brand
Mr. Pen
Colour
Silver
Graduation range
12 Inches
Material
Metal
Style
Classic

📏12-inch precision legs

🔩Lockable sliding nut for repeatable accuracy

✏️Quick-change pencil holder

3903 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Master your craft with precision that speaks volumes.

LOCK LOAD ACCURACY - Lockable sliding nut ensures your measurements stay consistent—no more guesswork or slips.
PRECISION MEETS POWER - Draw perfect circles up to 30 inches in diameter with professional-grade 12-inch metal legs.
EFFORTLESS PENCIL SWAP - Innovative pencil holder lets you change or sharpen your pencil on the fly, keeping your workflow smooth.
MEASURE TWICE CREATE ONCE - Use as a scribe or divider to quickly copy and measure lengths with unmatched precision.
VERSATILE CRAFTING COMPANION - Ideal for woodworking, carpentry, metalwork, leather crafting, and geometry—one tool, endless possibilities.

The Mr. Pen 12-inch professional all-metal compass is engineered for precision in woodworking, carpentry, drafting, and more. Featuring a lockable sliding nut for repeatable measurements, a quick-change pencil holder, and the ability to draw circles up to 30 inches in diameter, this versatile tool is a must-have for professionals and creatives seeking accuracy and efficiency.

Specifications

ASIN	B086RV9W72
Best Sellers Rank	7,653 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 7 in Drafting Compasses
Brand	Mr. Pen
Colour	Silver
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (3,241)
Graduation Range	12 Inches
Item Dimensions L x W	30.5L x 30.5W centimetres
Manufacturer	Mr. Pen
Manufacturer Part Number	GW01
Material	Metal
Model Number	GW01
Style Name	Classic
UPC	850016784230
Unit Count	1.0 count

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TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

2 months ago

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Great price for an authentic product. Fast international shipping too!

3 weeks ago

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3903 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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