Laser Distance Measurer GLM 40. The GLM 40 Professional laser distance measurer offers a variety of measurement modes in a single, compact device. This intuitive tool provides all essential measurement modes in one: length measurement, area calculation, volume calculation, and indirect height measurements. The easily readable, illuminated display shows the last three measurement results for quick reference. With a memory function for the last 10 measurements, the laser distance measurer enhances efficiency in your work. This tool is ideal for interior construction tasks such as electrical work, tiling, carpentry, drywall, painting, as well as heating, ventilation, and air conditioning. In addition to integrated dust and splash protection, the GLM 40 Professional laser distance measurer also features a robust, shock-resistant housing that protects it from damage when dropped from heights of up to 1 meter. Included in the package: manufacturer certificate, protective case, 2x 1.5 V LR03 batteries (AAA).