20-50mm/0.79-1.97" IP54 Digital Three Points Internal Bore Micrometer Set - 3127 Series (Insize)

The Insize 3127 IP54 Digital Three-Points Internal Bore Micrometer Set is designed for fast, precise internal bore measurements in demanding workshop environments. It covers bores from 20–50 mm (0.79–1.97 in) with a clear digital readout, making it ideal for engineers, machinists, and inspectors who need quick, reliable checks inside confined spaces.

The set is built for reliability around machine fluids and coolant, featuring carbide measuring faces and a ratchet stop to deliver repeatable measurements with consistent pressure. IP54 protection guards against dust and water splash, so you can work confidently in real-world shop conditions. It comes with setting rings and extension rods, and there is an optional data output cable (code 7302-SPC6) to export measurements up to 300 mm when needed.

• Digital three-point bore measurement: Quick, repeatable internal readings across 20–50 mm bores (0.79–1.97 in) with 0.001 mm (0.00005") resolution for precise QC and assembly work.
• IP54 waterproof and dust protection: Keeps the micrometer protected from coolant splashes and dust, so measurements remain accurate in real-world workshop conditions.
• Durable carbide contacts with ratchet stop and practical accessories: Long-lasting measuring faces and smooth, repeatable pressure, plus setting rings, extension rods, and an optional data output cable (7302-SPC6) for data capture up to 300 mm.

In practice, this bore micrometer set helps streamline bore inspections, reduce rework, and maintain tight tolerances across production, maintenance, and quality control tasks. With a clear digital readout, robust construction, and flexible accessories, it offers reliable, straightforward measurements for both professional shops and serious hobbyist applications.