How to take measurements before buying your mobile:
When you should take and/or the selection of measures of a piece of furniture, it is helpful to draw a picture of the room in which it is placed, marking also the position and measures of all the furniture already present in it, scoring doors, Windows, heaters, electrical outlets.
All this because you have to also take into account the space that remains among the furniture in the room, space needed to carry out the gestures necessary to live comfortably in the environment.
-doors and Windows should be able to open to 90°;
-for cabinets with hinged doors, in addition to their way when they're closed, you have to take into account the space needed to open them (which is equal to the width of the door itself);
-for furniture with drawers and pull-outs, apart from their way when they're closed, you have to take into account the space needed to open them (which is equal to the width of the drawer).
Only now you can focus on measures of the Cabinet to buy!
For a piece of furniture to be placed in a niche, remember to take the measurements at multiple points, because the walls are hardly square with the floor, or a team with one another (i.e. 90°), or parallel, in that case, consider a lesser extent.