Mechanical 3 Point Bore Micrometers

Mechanical 3 Point Bore Micrometers deliver high-precision internal measurements for machining and quality control, offering stable contact and repeatable results. This collection presents a range of three-point bore micrometers designed to measure internal diameters with accuracy across various bore sizes, from small holes to larger housings.

Within this collection, you will find the Insize 3227 Series Three Point Internal Bore Micrometer Sets and related bore gages that cover sizes such as 6-12mm, 12-20mm, 12-16mm, 20-50mm, 50-100mm, and up to 275-300mm. These devices, including complete sets, are built for durability in shop environments and feature reliable scales, hardened anvils, and quick alignment for accurate bore measurement. Mechanical 3 Point Bore Micrometers help ensure concentricity and tolerance control across components, making them essential for precision manufacturing and metrology workflows.