Mitutoyo 137-211 Extension Rod Set for Tubular Inside Micrometers

The Mitutoyo 137-211 is a three-piece extension rod set designed for use with Mitutoyo tubular inside micrometers. This set includes extension rods in 0.5-inch, 1-inch, and 2-inch lengths, enabling precise internal diameter measurements across a wide range of bore sizes.

Key Features:

• Includes three extension rods: 0.5-inch, 1-inch, and 2-inch lengths
• Compatible with tubular inside micrometers having 2-6 inch range and 0.5-inch travel
• Enables extended measurement range by combining rods with micrometer head and anvils
• Precision-ground steel construction for accurate, repeatable measurements
• Allows measurement of deep bores and internal diameters beyond base micrometer capacity

These extension rods expand the versatility of your Mitutoyo tubular inside micrometer system, allowing you to measure internal diameters in deep holes, cylinders, and bores that would otherwise be inaccessible with the base micrometer alone. The rods can be used individually or in combination to achieve the required measurement depth.