Large area of the hall light steel keel ceiling installation keel how to leveling is the pull line so long how could pull up
You can use the infrared level, but eventually have to pull the line.
You can use the infrared level, but eventually have to pull the line, you can first fixed in the central part of a temporary benchmark, so that a large span will not affect the accuracy
Large area of light steel keel ceiling, we are leveling with infrared level. Make a bracket fixed in the light steel keel 4,50 cm on the wall, made a pair of bone, made of wood T-shaped, hanging in the bar near the main bone, with reference to the wall fixed wooden side height Leveling.
