HW200 digital level features LTD backlight for clear visibility in low light conditions. This helps maintain accuracy when lighting is poor or underground workspaces are used. Inverted display function. The display can be read from different angles or orientations, improving readability in confined or overhead installations. Horizontal calibration. Simple calibration ensures accurate horizontal measurements for dependable alignment in construction, cabinetry, and setup tasks. REE relative measurement. Provides precise and convenient relative angle readings between surfaces, useful for comparing slopes or aligning components without rezeroing. Practical applications Installing wall shelves, cabinets, or countertops in dim garages, attics, or utility rooms where lighting is limited; the LTD backlight aids accurate leveling. Setting up machinery or equipment on a workbench when the instrument must be read from above or at awkward angles; the inverted display enhances usability. Furniture assembly or picture hanging that requires consistent level across multiple surfaces; use horizontal calibration and REE relative measurement for reliable results.