A laser level is a measuring instrument that uses laser technology to achieve precise marking. It can be applied to architecture, decoration, furniture making, painting and other fields, and can be used for the precise positioning and layout of various geometric figures such as straight lines, cross lines, and grid lines on walls, floors, and ceilings. HC2312G, is a simple 12 line laser level, it is easy to use, it is with nice workmanship, small size, high precision, it's a very good tool for your work.