Micrometers

Precision Inside Micrometer Set 150-2100mm with Calibration Ring – Carbide Option Available, 0.01mm Resolution

  • Professional inside micrometer set for 150-2100mm internal measurements.
  • Features Φ22mm steel rods, calibration ring, and optional carbide faces.
  • Achieves (3+n+L/50)μm accuracy with 0.01mm resolution.

Product Description:

Professional Large Range Inside Micrometer Set (150-2100mm) with Calibration Standard

Engineered for precision measurement of medium to large internal diameters, our comprehensive inside micrometer set covers an extensive range from 150mm to 2100mm. The system includes a precision calibration ring for accurate zero setting and features sturdy Φ22mm steel extension rods for optimal measurement stability. With optional carbide-tipped measuring faces available (Model: 312-XX-070), this micrometer set delivers exceptional durability and accuracy for various industrial applications.

 Technical Specifications:

Dimensional drawing (312-00-060)

Dimensional drawing (connecting rod)

Model NumberMeasuring RangeExtension Rod Configuration
H-312-00-060150-175mmMicrometer head only
H-312-01-060150-1400mm25mm, 50mm(2), 100mm, 200mm, 400mm(2)
H-312-07-060150-1500mm25mm, 50mm(2), 100mm(2), 200mm, 400mm(2)
H-312-02-060150-2000mm25mm, 50mm(2), 100mm, 200mm(2), 400mm(3)
H-312-03-060150-2100mm25mm, 50mm(2), 100mm(2), 200mm(2), 400mm(3)

Resolution: 0.01mm
Accuracy: (3+n+L/50)μm (where n = number of extension rods, L = maximum measurement length in mm)
Rod Specification: Φ22mm high-quality steel construction
Optional Upgrade: Carbide measuring faces (Model: 312-XX-070)
Included: Precision calibration ring for zero setting

 Key Features:

  • Extended Measurement Range: Configurable from 150mm to 2100mm with various extension rod combinations

  • Precision Calibration Standard: Includes calibration ring for accurate zero setting and verification

  • Optional Carbide Upgrade: Wear-resistant carbide measuring surfaces available (Model: 312-XX-070)

  • High-Quality Extension System: Φ22mm steel rods ensure excellent rigidity and measurement stability

  • Superior Accuracy: Professional-grade precision with (3+n+L/50)μm accuracy formula

  • Fine Resolution: 0.01mm resolution for precise internal measurements

  • Modular Design: Interchangeable extension rods for flexible configuration

  • Industrial Application: Designed for demanding workshop and quality control environments

 Applications:

  • Machinery manufacturing and maintenance

  • Pipe and tubing internal diameter measurement

  • Engine cylinder and large bore inspection

  • Automotive and aerospace component manufacturing

  • Industrial equipment maintenance

  • Quality control and precision metrology

  • Heavy equipment manufacturing

 Additional Information:

Accuracy Calculation Example:
For 1800mm measurement with 8 extension rods:
(3 + 8 + 1800/50)μm = (3 + 8 + 36)μm = ±47μm

Professional Features:

  • All extension rods are precision manufactured and clearly marked

  • Optional carbide tips for extended tool life in high-volume applications

  • Complete set includes durable storage case and documentation

  • Custom configurations available for specific requirements