Tubular Inside Micrometer with Extension

The 140 series models provide an accurate and flexible solution for measuring large internal diameters with a variable measuring range. The extension arm measuring system allows the same micrometer to be used 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: 40 - 120" (Drum and extension arm combinations supplied)
- Extension arms: 6 pieces of extension arms included in the package
- Measuring surfaces: very hard, abrasion-resistant measuring surface made of tungsten carbide suitable for continuous industrial measurement of hard materials
- Scale: 0.001" analogue reading
- Measuring type: 2-point inside diameter measurement for holes, bushings, tubes, and cylinders