Mr. Pen - 12 inch Compass with Wing

This 12-inch compass serves for making intermediate size circles and arcs in my shop as I have smaller compasses and a large trammel set for the really big stuff. This compass is solidly built and a good deal for the money. The pencil holder accepts standard pencils easily but will not take one of the oblong shaped carpenter's pencils. Not an issue with me. The compass was hard to open initially despite having a sheen of oil on it. I added a single drop of tri-flow lubricant to each side of the hinge and it worked much better (still a little stiff, which is good for holding position before tightening the main screw). If you haven't used a larger compass like this before it may seem awkward but I think it'll work fine for you once you're used to the heft of it. It opens to a 16-inch radius so you can make some pretty big arcs and circles. For radii below about 4-inches it will likely be less awkward to just use a smaller compass. Also nice for use as a divider. Note, though, that the "feet" in this compass are not all that sharp and would not be recommended for metal-working. Overall a nice addition to my shop.

Es un buen producto, llegó tal cual el modelo mostrado en las fotos, material resitente y de calidad, quizá sea que el me me enviaron tenía un buen tiempo en stock y el material en algunas partes presenta unas pequeñas manchas negruzcas; es el único detalle, no afecta su funcionamiento. Ideal para tener precisión en la medición y el trazo.

こんなに大きなコンパスがあったのを知りませんでした。大きな円が描けて便利、簡単に六角形、八角形も描けて最高。 鉄板に直接けがきもできます。

This is a must-have if you do any kind of woodworking or layout work. It’s one of those tools that seems simple but makes a big difference in accuracy and consistency. The build quality is solid—the metal construction feels durable and well-made, not flimsy like cheaper compasses. The wing adjustment is a huge plus because it lets you dial in your measurements precisely and keeps them locked in without slipping. It makes marking circles, arcs, and repeat measurements quick and accurate. Once you set it, it stays consistent, which is key when you’re trying to get clean, professional results. The pencil holder grips well, and the point is sharp enough to stay planted without wandering, so your lines come out clean and controlled. It’s also a good size—large enough for bigger layouts but still easy to handle and store. Overall, simple tool but extremely effective. If you care about precision and clean layout work, this is definitely something you

oh this is an exciting fun tool. I'll update later, but I'm pretty happy with it so far. Feels very sturdy and I'll probably have this the rest of my life as a designer.