<X, Y, Z> size indicator when placing/morphing a piece in build mode and similar sizing 'ruler'

as the title says, when placing a piece in build mode have a small tooltip somewhere that shows the dimentions of pieces as you resize it and when placing, and another tool that you can click or drag from one piece or location to another and it displays the distance to target click/block (orthogonal, so x,y,z displacement).



These kinds of things are what i keep finding myself wanting when building.