How dimension numbers are read

Dimensions per GOST: 45° ticks at the ends and at every joint of the chain, the number above the line in the middle. A vertical dimension reads from bottom to top, with the number to the left of the line.
If there is no room for the number, it goes beyond the end of the line, higher with a leader, or onto a shelf. The number does not overlap another number, a wall or an object, and does not go outside the room.
The width and length of a room are shown as a line from wall to wall, at the top and left walls. If an object occupies the middle, the line moves into the room to a free strip.
An identical dimension is placed once: what the outer chain showed is not repeated from the inside. The door width stays in the larger room.
A short piece of wall by a door or window, where the number does not fit or furniture covers the line, is not drawn. It is visible when the door or window is selected.
Unit: a new project in the Russian version is in millimeters, in the English version in feet, in the others in centimeters; the chosen unit is remembered in the project. All numbers on the plan use one unit; millimeters have no unit label, as on a drawing. Heights on badges are always without a unit label: in millimeters, in centimeters, in meters.
Length fields in windows are also in the project unit: furniture dimensions and distances, heights and drops in Finishes, box width, Ground level, Plan cut height, stair rules. Tile joint, plaster thickness and waterproofing turn-up are always written in millimeters, as in material data sheets.
In Drawings and in the album, dimensions are always in millimeters, as GOST requires. The unit switch there changes only the fields in windows.
Dimensions shrink and grow together with the plan. If the digits cannot be read, they are not drawn: zoom in on the plan.