The L.S. Starrett 823BZ is a precision inside micrometer designed for accurate internal measurement across a range of 1-1/2 to 12 inches. Built to Starrett's exacting quality standards, it is well-suited for machinists, toolmakers, and industrial professionals requiring reliable bore and inside diameter measurements.
This inside micrometer is ideal for MRO, manufacturing, and inspection applications where consistent, repeatable results are essential. The 823BZ series reflects Starrett's long-standing reputation for durable, high-quality measuring tools used in demanding shop environments.