ZJT自动安平激光投线仪是一种新型的光机电一体化仪器，采用了635nm激光二极管，可以在墙面上投射出可见的红色水平直线和铅垂直线。仪器内部有自动补偿器，利用内部补偿可自动保持激光投线的水平或铅垂。本产品可用于室内装饰、吊顶、门窗安装、房间隔断、管线铺设等建筑施工。

ZJT line laser level is a new type apparatus which integrates light, electricity with machine, adopting 635nm laser diode, projecting red horizontal and vertical visible beams in the wall. The product is installed with an automatic compensator, which can keep the laser beam horizontal or vertical automatically. This product can be used in the construction, such as, interior decoration, drop ceiling, the installation of doors and windows, the partition, laying of pipes, etc.