How to install the rectangular ceiling lamp in the living room

The rectangular ceiling lamp in the living room should correspond to the long and short sides of the living room respectively (that is, the long side of the lamp corresponds to the long side of the living room, and the short side of the lamp corresponds to the short side of the living room), which makes it easier for people to feel upright. Of course, during installation, you can take the way of measurement and marking, first use a meter ruler to measure the distance from the ceiling decoration (the physical plane perimeter frame of the installation ceiling lamp) to the center, and then average the size of both sides, so as to ensure that the ceiling lamp is installed in the center position, and ensure that the installation of the lamps and lanterns is not out of place and offset by marking the line.

A screw is placed in the center of the lampholder. Make the lamps still movable. Then I went down and looked at all four sides by visual inspection.

Adjust it slightly. The two ends of the rear lamp are fixed and completed. (Sometimes the amount of wall to the lamp though.)

I measured it with a tape measure, but after I installed it, I didn't think it was so positive. Sometimes the walls aren't that straight. I have one year of experience in lighting up. )

Pull the four corners, and the position where the two lines cross is the center.

I think we should install abrasives. It's the ceiling.