Strait-Line Laser Level, 120 Is A High Power Surface Mount Laser Square That Works In Brightly Lit Workplaces, Features 2 Axis Adjustment, A 360 Degree Rotation & Aim, That Provides Optimal Line Control Over 120' Workspace, Laser Line 120 Includes An Angle Indexing Ring That Provides Accuracy In Results, A 635 NM Laser Diode For Superior Line Visibility In Brightly Lit Conditions & A Rubberized Case For Durability.