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  • Heavy-Duty - The Starrett Internal Groove Micrometer has flush ends contacts, hardened and ground gaging contacts that are .030" thick.
  • Resists Rust - It is made to last with quality materials that ensure durability and better work performance. It is furnished with a no-glare Satin chrome reading surface and resists rust.
  • Accurate Measurements - Starrett precision measuring tools exceed accuracy and performance requirements of national and international standards, providing excellent fine precision tools for industrial, professional and consumer markets worldwide.
  • Quick Adjusting Tool - The Micrometer is the perfect tool for making quick and easy adjustments. It is accurate and easy to use with smooth friction thimble and lock screw.
  • The Standard for Excellence - Proudly made in the USA, Starrett combines over 140 years of American heritage and innovation with globally sourced materials to deliver exceptional quality tools and products.

This precision measuring tool is a must-have for any metalworking enthusiast. The Starrett 701B Inside Groove Micrometer is designed to accurately measure the inside diameter of a groove, providing you with the exact measurements you need for your metalworking projects. Made in the US with high-quality materials, this micrometer is built to last and withstand tough working conditions. With a range of features including a 1.5 to 2.5 inch depth and a width of 2.4 inches, this micrometer is perfect for measuring and marking tools for precision. It's easy to use and provides you with accurate measurements every time. Whether you're a professional metalworking expert or just starting out, this micrometer is a great addition to your tool collection.