Tubular Inside Micrometer Carbide Tipped

The 137 series models provide an accurate and flexible solution for measuring inside diameters when the available measuring range varies. The extension arm measuring system allows the same micrometer for a wide range of internal diameters without the need for separate instruments. The model is practical for machine shops, measuring laboratories, and workshops. Features: - Measuring range: 2-40" (Drum and extension arm combinations are supplied) - Extension arms: 8 pcs of extension arms included in the package - Measuring tips: Highly durable, abrasion-resistant measuring tips made of tungsten carbide suitable for industrial applications and continuous measurement of hard materials - Scale: 0.001" analogue reading - Measuring type: 2-point measurement of inside diameters for holes, bushings, tubes, and cylinders.