That's a good idea, but poorly done. The vise is designed to lock in any position, but when locked the head still wobbles a bit. It is enough that the object you are holding is not still, which defeats the purpose of working with objects that require precision. It's very difficult to go back given the pandemic, so I can deal with that. I don't know if only this part or the whole line is defective. I just want to share my experience. The problem with mail order is that you can't get your hands on the item before you buy it.