Gauge Block: High-Precision Calibration Standards for Metrology

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Gauge Block: Precision Dimensional Measuring Standards

This page provides an overview of gauge blocks (also known as slip gauges), which are precision measuring instruments used for dimensional calibration and verification. Made from high-quality steel or ceramic, they feature extremely flat and parallel surfaces, offering accuracy within microns. Topics include their design, grading, applications in metrology, and usage in workshops and laboratories.
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Advantages of the product

Ultra-High Precision

Tolerance classes up to IT0 (±0.0005mm) and surface flatness ≤0.0002mm make them ideal for calibrating CMMs, micrometers, and calipers. Essential in metrology labs for traceable measurements.

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Inch gauge blocks designed for imperial measurements are offered from 0.1in to 10in, with tolerances as tight as ±1μin (±0.025μm). Heat-treated steel construction with a hardness of 64-66 HRC provides these blocks with wear resisting properties. Ground surfaces guarantee optical flatness for ribon wring fitting. Such blocks serve an important purpose in the North American manufacturing and aerospace industries where tools like dial indicators and height gaugers that are calibrated to inch precision, as per ASME B89.1.1 standards.

Frequently Asked Questions

What size ranges do gauge blocks cover?

They range from 0.5mm to 1000mm in metric/inch systems, with incremental sets for custom lengths via wringing, achieving sub-micron accuracy.

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Customer Reviews

Dawson

The IT0-grade blocks (±0.0005mm tolerance) formed the backbone of our calibration lab. Their lapped surfaces (Ra≤0.02μm) ensured CMM accuracy, critical for aerospace component certification.

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slip gauge outside micrometer ceramic gauge block inch gauge block calibration gauge block
Compliance with Global Standards

Compliance with Global Standards

Meets ISO 3650, ASME B89.1.9, and JIS B7506 standards, ensuring compatibility with international calibration protocols in aerospace, automotive, and semiconductor industries.
Easy Maintenance

Easy Maintenance

Lapped surfaces require minimal cleaning (alcohol wipes) and storage in temperature-controlled environments, reducing upkeep costs for metrology departments.
Multi-Application Use

Multi-Application Use

Used in labs for tool calibration, on shop floors for machine alignment, and in research for precision spacing in optical setups. Critical for maintaining quality control in ISO 17025-certified facilities.
Cost-Effective Calibration

Cost-Effective Calibration

Reusable and long-lasting, gauge blocks offer a cost-effective alternative to disposable calibration standards, providing reliable accuracy for decades with proper care.