Get it right the first time with the CHANNELLOCK® 4 Foot Box Level. Inspired by America's hardworking tradesmen and women, this box level features high-contrast vial surrounds with a 300° view center block vial for superior readability, a durable aluminum frame with precision-milled edges, and fixed shock-absorbing end caps to support years of hard work. Plus, its ergonomic hand grips allow for easy handling while wearing gloves. With ±0.0005 in./in. accuracy, this professional-grade level tool is built to conquer any challenge you’re up against. ACCURACY 0.0005 in./in. tolerance in all ten working positions DURABLE ALUMINUM FRAME and fixed impact-resistant end caps HIGH-CONTRAST VIAL SURROUNDS and a 300° view center block vial for ultimate readability PRECISION-MILLED EDGES for superior accuracy on the job ERGONOMIC HAND GRIPS allow for easy handling while wearing work gloves Product Dimensions: 48" x 2.5" x 1"