The 603.104-90B DR 90B is a professional 90 cm magnetic level, specifically designed for drywall applications and manufactured by 4K5. This precision measuring instrument features a robust aluminum profile with a scratch- and corrosion-resistant powder coating for demanding construction site conditions. Strong neodymium magnets are integrated along the entire 90 cm length, allowing for a secure hold on metal studs, tracks, and frame components during drywall installation without the need for manual holding. Three high-precision vials ensure accurate leveling measurements with a sensitivity of 0.5 mm/m for horizontal, vertical, and 45-degree angle applications. The vials are protected by impact-resistant acrylic covers and feature well-readable bubble indicators with contrasting colors for optimal visibility in various lighting conditions. The level has milled V-grooves on both sides for secure placement on pipes, as well as rounded edges to protect finished surfaces. With its 90 cm length, this tool is particularly suited for checking long drywall panels, door frames, and ceiling installations. The product measures 90 cm in length, 5.5 cm in height, and 3.2 cm in width, weighing approximately 1.2 kg. The magnetic level comes with end caps for protection during transport and storage. This measuring device is designed for professional tradespeople and demanding DIY enthusiasts who require reliable, precise leveling tools for drywall and general construction projects. The design prioritizes functionality with ergonomic handles and a balanced weight distribution for comfortable extended use. All measurements are calibrated at 20°C for optimal accuracy under standard working conditions.