Compass for Geometry Large, Professional Drawing Compass Metal Drafting Compass Kit with Extension Bar,Metal Compass Geometry Set for Geometry, Drafting, Math, Drawing, for Engineer and Mathematician

I use this set for elements of iconography paintings. I am very impressed with the quality and accuracy for the price. In my opinion this set is well worth the price. I asked my husband, who is an engineer, what his opinion was of this set and he agreed with my assessment.

The device does what I need it to do. I was able to use my own pen by using the attachment that it came with. No need to buy the special ink that they recommend. However, I might look into it in the future.

These arrived either not even fully assembled, or with most of the smaller parts having worked loose and fallen off in transit. All were present, and I did manage to put the pieces together....but these are supposed to be precision instruments and they are not.The best description of how they are fitted together would be... Floppy.Not what you want if you're trying to draft a clean and accurate circle.Go with Staedtler or something comparable.Or failing that, get a board, a drill, a hammer, and a small nail, and make something yourself.It will take less time and be less frustrating than trying to work with this cheap, and mostly plastic junk.

As soon as this arrives to you, tighten everything down!! This arrived to me "assembled"...but barely held together! The dials were juuuust screwed onto the pins so the tools were in one piece and would survive transport. As soon as I opened the container a few tools fell out and immediately came apart on the floor - so I checked the rest and everything was super duper loose. Just make sure to tighten everything so you done lose an important (tiny!) piece. Everything works great aside from that. Nothing wrong with the tools. Bought this set for glasswork, mandalas, and astrology!

Features good. Smaller bow compass excellent. Large compass has foldable legs I presume for drawing very short radius arcs. This is one feature I could do without. Why have this when a small bow compass is included? One joint is so loose it will not remain rigid while attempting to draw arcs... nothing I could do remedies the problem. It still will draw a good circle, but the leg may have to be held such that it remains straight.

I’m anxious to use them.

well. it does technically work. so star for that.otherwise, its pretty cheap. the larger compass does not hold its angle at all, it can easily be pushed open or closed without using the turn-knob so therefore it doesnt hold in the correct angle while using. the smaller one is a bit better at maintaining its angle, but after a few weeks the parts started falling off - the little knobs that hold everything together. I haven't used the extension part so I can't comment on that, but since the large doesnt hold its shape anyways... I probably wont attempt to. I am too late for the return window. but if I could I would return it, and get a more professional one instead. this one kinda looked more professional than others, and it was more expensive so I thought it was maybe a step up, but I'm thinking its not.

Purchased as a gift. Have not received any complaints on the operation yet. I’ll let you know if I have any. To me it sounds like a good product I purchased.