Professional Compass for Geometry with Extra Lead Refills - Makes 10 Inch Circle - Math Compass, Drawing Compass - for Drafting, School, Woodworking - Metal Precision Bow Compass with Lock

I had a set that included a compass, but it didn't lock into place, so trying to teach a beginner how to hold it steady wasn't going very well. This one has the wheel to wind it out to where he needs it and it stays in place for him to use it without worrying about it sliding in or out. This one comes with extra lead and even a couple of extra screws and wheels, and it seems to be pretty sturdy. It's reasonably priced and good quality, so I'd recommend it.

This is an excellent compass, definitely lives up to its claim of bring professional grade. Save for the lead (and the bottles the refills come in) the entire thing is made of metal and has a bit of heft to it. Sturdy enough for all kinds of projects!I did take one point off of ‘easy to use’ because adjusting the compass is a bit awkward due to the placement. But it doesn’t lose any more than that because while it is difficult to adjust while in use, you definitely aren’t going to bump anything off course or accidentally move the arm a few degrees.As a side note, shipping was very prompt and the product came in a little, clear, resealable pouch that I’ve chosen to keep for storage.

I'm using the compass mostly for drawing designs on wood for carving. This is a little more demanding than using on paper. It works, but does not have the strength that more expensive ones do. The graphite or stylus can slip, and if I'm not careful, the screw controlling the angle can be nudged accidentally, changing the setting - it doesn't lock. As I said though, it works, and is value priced.

The compass arrived today, and I put it through its paces--I found none of the problems that I read about in some other reviews. It is very sturdy; the point and the lead stay firmly in place; the screw to enlarge or compress the circle radius works smoothly; and it is easy to twirl around in making the circle. It also comes in a nice recloseable plastic carrier along with its many replacement leads. I would recommend this to all my geometry students and will probably use it as my personal go-to compass.

When ordering, I was skeptical about the quality because of the ultra reasonable price. Item arrived two days later. compas is straight forward to use; both the pointer tip and lead have adjustments. The main adjustment wheel is metal fine thread rod and wheel, allowing for finite radius adjustment. seller provides plenty of replacement lead and even a couple small adjustment wheels with screws. You dont realize how valuable a tiny screw or wheel is until you drop one and it falls into the shad carpet black hole. Highly recommend!

I ordered this product to help me make basic wood working projects for the backyard. I really didn’t expect such a great product for a small price. I would recommend with item to anyone needing to do basic circles to complicated wood working projects. Very easy to use and very sturdy.DavePS- Ask Amazon. I give a 3 star review, it’s a good product. I give a 5 star review, it’s the best !!

The needle of this compass is secured by a set screw. It's nearly impossible to secure the needle by turning the set screw without a pair of pliers and a large amount of force. The point should be secured in place by the manufacturer (spot weld, perhaps?) or another type of retaining mechanism. Surprisingly sloppy design, given that this device was created by a pair who tout their engineering credentials. The rest of the design is quite good for an economy compass, but this is a failure at a critical point.

I really like my protractor it's easy to use and is very well made. Will buy again.