Precision Inside Micrometer Set – Adjustable Range 50-1500mm with Calibration Ring & Carbide Tips

Professional inside micrometer set with extension rods for measurements from 50-1500mm.
Includes calibration ring for zeroing, carbide contact points, and achieves accuracy of (3+n+L/50)μm.
Ideal for large internal diameter measurement.

Product Description:

Precision Inside Micrometer Set – Large Range Internal Measurement with Calibration Ring

Our professional inside micrometer set provides accurate measurement of internal diameters from 50mm to 1500mm through a combination of extension rods. The set includes a calibration ring for precise zeroing adjustment, ensuring measurement accuracy throughout the entire range. Featuring carbide-tipped contact points and Φ15.5mm steel extension rods, this micrometer set offers exceptional durability and measurement stability for industrial applications.

Technical Specifications:

Model Number	Measuring Range	Extension Rod Configuration
H-301-10-060	50-63mm	Micrometer head only
H-301-02-060	50-75mm	13mm rod
H-301-11-060	50-100mm	13mm, 25mm
H-301-12-060	50-150mm	13mm, 25mm, 50mm
H-301-03-060	50-175mm	13mm, 25mm(2), 50mm
H-301-04-060	50-250mm	13mm, 25mm, 50mm, 100mm
H-301-13-060	50-300mm	13mm, 25mm, 50mm(2), 100mm
H-301-05-060	50-600mm	13mm, 25mm, 50mm, 100mm, 150mm, 200mm
H-301-14-060	50-500mm	13mm, 25mm, 50mm(2), 100mm, 200mm
H-301-21-060	50-900mm	13mm, 25mm, 50mm, 100mm, 150mm, 200mm, 300mm
H-301-15-060	50-1000mm	13mm, 25mm, 50mm, 100mm(2), 150mm, 200mm, 300mm
H-301-16-060	50-1500mm	13mm, 25mm, 50mm, 100mm(2), 150mm, 200mm(2), 300mm(2)

Resolution: 0.01mm
Accuracy: (3+n+L/50)μm (where n = number of extension rods, L = maximum measurement length in mm)
Rod Diameter: Φ15.5mm steel tubing
Contact Points: Carbide-tipped for wear resistance

Key Features:

Extended Measurement Range: Configurable from 50mm to 1500mm with various extension rod combinations
Precision Calibration Ring: Included for accurate zero setting and verification
Carbide-Tipped Contacts: Ensures long-term measurement accuracy and wear resistance
High-Quality Extension Rods: Φ15.5mm steel construction provides rigidity and stability
Mathematical Accuracy Formula: Precision guaranteed through (3+n+L/50)μm accuracy calculation
Interchangeable Components: All extension rods are precisely manufactured for perfect compatibility
Professional Resolution: 0.01mm resolution suitable for precision internal measurements

Applications:

Machinery manufacturing and maintenance
Pipe and tubing internal diameter measurement
Engine cylinder and bore measurement
Large bearing housing inspection
Automotive and aerospace component manufacturing
Quality control and precision metrology