Sticky measurement tool

Hi. I'd like to propose an improvement to Mesure tool. Sometimes I need to position two objects or separate polygons inside one object at the exact distance. I eyeball the distance then measure it then move it again and measure again. Plese introduce the possibility to lock mesurement handles at the snapping point (vertex, edge, face). I want to set the measure handles to the corner vertices of two polygons and LOCK them. Then I would move one of the polygons and measure tool would stay active showing the distance during the movement and I would immediately know the distance. It should work in object mode to measure distance of two objects and also in edit mode to measure the distance of two vertices/edges/polygons.