Precise every time
The fixed-point center finder ensures precise, consistent markings every time you use it.
- Free shipping
- 14-day easy returns
- Secure checkout
- Quality guaranteed
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Why customers love it
Precision circles and centers, every single time
This adjustable aluminum circle ruler brings accurate circle drawing and center marking to woodworking, crafts, and DIY projects with a simple, reliable design.
- Adjustable design handles circle diameters from 36.5mm to 300mm (1.43–11.81 inches)
- Fixed-point center finder ensures precise, consistent markings every time
- Durable aluminum construction for long-lasting performance and stability
- Lightweight and compact, easy to carry and store
- Simple to set up and use, suitable for both beginners and experienced craftsmen
- Versatile for use with wood, metal, plastic, and other materials
Why you'll love this circle ruler
One tool, many sizes
The adjustable design handles circle diameters from 36.5mm to 300mm (1.43–11.81 inches), covering a wide range of projects.
Light and portable
Lightweight and compact, it is easy to carry and store, so you can take it wherever your work takes you.
Built to last
Durable aluminum construction provides long-lasting performance and stability for repeated use.
Setup
Getting started in three simple steps
No electrician, no wiring, no fuss.
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Set your diameter
Adjust the ruler to your desired circle diameter within the 36.5mm to 300mm (1.43–11.81 inches) range.
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Position the center finder
Place the fixed-point center finder on your workpiece to lock in a precise, consistent center.
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Draw or mark
Trace your circle or line marking directly on wood, metal, plastic, or other materials with confidence.
Specs
The details that matter
Built to last outdoors, season after season.
- Size
- 300mm (11.81 inches) maximum diameter
- Material
- Aluminum
- Product Type
- Circle drawing ruler and center finder
- Adjustable Range
- 36.5mm to 300mm (1.43–11.81 inches)
Our worry-free shopping promise
If your order arrives damaged, defective, or not as described, contact us within 14 days and we will make it right with a replacement or refund.
Frequently asked questions
Everything you might want to know before you order.
What circle diameters can this ruler draw?
The adjustable design handles circle diameters from 36.5mm to 300mm (1.43–11.81 inches), giving you a wide range for different projects.
What materials is the ruler made from?
It is made from durable aluminum, which provides long-lasting performance and stability during use.
Is this tool suitable for beginners?
Yes, it is simple to set up and use, making it suitable for both beginners and experienced craftsmen.
What materials can I use this ruler on?
It is versatile and works well with wood, metal, plastic, and other materials.
How does the center finder help with marking?
The fixed-point center finder ensures precise, consistent markings every time, so you can trust your center points.
Shipping & returns
Shipping
- Delivers to United States (based on your selected country/region).
- Estimated delivery: 3–15 business days after dispatch.
- Shipping cost: Free.
Returns
You can request a return within 14 days after delivery. Standard returns have a €4.00 EUR (approximately $4.66 USD) flat-rate return shipping fee, deducted from your refund. Return shipping is free for items that arrived damaged, defective, or incorrect. Items should be unused and in original packaging where possible. Contact us before sending anything back.
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Adjustable 300mm Aluminum Circle Drawing Ruler and Center Finder for Woodworking
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Adjustable 300mm Aluminum Circle Drawing Ruler and Center Finder for Woodworking
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excellent tool and made of very good material
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Everything as described, to be tested.
