A few months back I had to do some fettling on the round ones fitted on my car, see post #717347. (I sold the rectangular-ish / lozenge-shaped ones that came with the car as spares, as they just seemed so poorly made). There are about ten different planes in which the mirrors and the stalks can be manipulated, and in the case of mine there's a further sort of fine-tuning possible by slackening the little tensioning bolt on the back of the mirror and rotating it 180 degrees around its own axis, which can raise or lower it by a couple more centimetres.
![[Linked Image]](https://www.tm-img.com/images/2021/12/08/Drivers-side-mirror-adjustments.jpg)