The Insize 3228-6 Wide Range Three Points Internal Micrometer, 4-6" Is Designed For Precision Measurement, Inspection, And Quality Control Applications. Graduation .0001". Setting Ring 4" Dia (Included). Carbide Measuring Faces. Ratchet Stop. Setting Ring Are Included (Except Part No. 3228-12). Supplied With Manufacturer Inspection Certificate. Suitable For Shop Floor Inspection, Cnc Machining Support, Receiving Inspection, And General Industrial Measurement Work.

• Graduation .0001"
• Setting ring 4" DIA (included)
• Carbide measuring faces.
• Ratchet stop.
• Setting ring are included (except part no. 3228-12)
• Supplied with manufacturer inspection certificate.