The STANLEY CLASSIC BOX LEVEL is a professional-grade measuring tool designed for precision work on construction sites and in workshops. With a 100 cm (40") length, it provides extended reach for leveling large surfaces, frames, and installations. Built with STANLEY's trusted durability, this box level features a sturdy aluminum or steel frame that resists warping and damage from regular use. The clear, easy-to-read vials ensure accurate readings for both level and plumb applications, making it essential for carpenters, contractors, and DIY enthusiasts. The compact box design offers excellent visibility of the bubble indicators while maintaining structural integrity. Its lightweight yet robust construction makes it comfortable to handle during extended work sessions. Ideal for framing, masonry, plumbing, and general construction tasks where accuracy and reliability are non-negotiable.