Strong Metal Construction: Built with robust metal materials and clear markings for long lasting use, maintaining dependable accuracy in demanding conditions like plumbing or woodworking tasks Secure Clamp Construction: Features a clamping mechanism with detailed markings for quick and accurate copper tube measurements, making it an essential tool for HVAC technicians during inspections and installations Accurate Cutting Assistance: Checks inner / outer clearances effectively to minimize cutting errors, ideal for manufacturers working with complex piping setups requiring high accuracy Measurement Display preferences: Shows both metric and standard units without needing conversions, ensuring compatibility with various engineering requirements and efficient workflow in different projects Versatile Application extent: Designed for HVAC setups and multiple uses, this tool provides consistent industrial grade measurements for refrigeration systems and other detailed tasks while saving time and effort, Manufacturer: TFAOYS