Mitutoyo 339-304 Digimatic Tubular Inside Micrometer 8-80 Inch Range

The Mitutoyo 339-304 is a precision Digimatic tubular inside micrometer designed for measuring internal diameters across an exceptionally wide range of 8 to 80 inches (203.2 to 2000mm). This extension pipe type IMJ model comes complete with 9 extension rods, allowing you to configure the tool for virtually any large-bore measurement application.

Key Features:

• Wide measurement range of 8-80 inches achieved by combining extension pipes and anvils with the digital micrometer head
• Digimatic digital readout for quick, accurate readings in both inch and metric units
• Highly durable extension pipes engineered for rigidity and long service life
• Carbide-tipped measuring faces provide excellent wear resistance and measurement accuracy
• Includes 9 extension rods for maximum versatility across different bore sizes
• MJ model designed for professional inspection and quality control applications

This tubular inside micrometer is ideal for measuring large internal diameters in cylinders, pipes, bearings, and machined bores where conventional inside micrometers cannot reach. The modular extension system ensures you have the right length for any measurement task, while the digital display eliminates reading errors associated with vernier scales.