The Leica Rugby 640 is a self-leveling horizontal and vertical laser tool designed for professional measurement applications. This robust construction laser features a durable design suitable for demanding job site conditions, with an operating range of up to 120 meters when used with the included rod eye receiver. The instrument provides precise leveling and alignment capabilities for both horizontal and vertical planes, making it ideal for construction, surveying, and installation tasks. Its self-leveling mechanism ensures quick setup and reliable accuracy within a specified tolerance range. The laser operates on standard battery power with efficient energy consumption for extended field use. The compact housing measures approximately 15.5 cm in length, 10.2 cm in width, and 9.8 cm in height, with a weight of 1.2 kg including batteries. The device functions effectively in temperatures from -10°C to 50°C and is protected against dust and water ingress according to IP54 standards. The visible laser diode emits a clear beam for indoor applications, while the rod eye receiver enhances outdoor visibility in bright conditions. This measurement equipment includes practical features such as manual mode override for angled measurements and out-of-level warning indicators. The Rugby 640 represents the successor model to previous Leica laser levels, incorporating refined electronics and mechanical components based on field experience. Its design prioritizes user ergonomics with intuitive controls and clear status displays. The instrument comes complete with a carrying case, batteries, and mounting accessories for immediate deployment. Professional users will appreciate the consistent performance and measurement reliability that characterizes Leica precision instruments. This tool serves contractors, builders, and technicians requiring accurate reference lines for flooring, ceiling installation, wall alignment, and general construction layout work.