The TAFT PEIRCE 5" Sine Bar No. 9115 is a precision machinist tool used for grinding, inspection, and milling applications. Manufactured by Taft Pierce in the United States, this sine bar is a reliable and durable piece for professionals in the machining industry. With its accurate measurements and quality construction, this tool is a valuable addition to any workshop or tool collection. Whether used for inspection, grinding, or milling tasks, the TAFT PEIRCE 5" Sine Bar is a must-have for machinists looking for precision and reliability in their work.