High Precision Gauge Block Set | Steel & Ceramic Slip Gauges

Product Overview

The Gauge Block Set is the universally accepted standard of linear measurement in manufacturing and metrology. These rectangular blocks are precision-ground and micro-lapped to specific lengths with tolerances measured in fractions of a micron. By "wringing" (sliding and twisting) multiple blocks together, their ultra-flat surfaces adhere to one another flawlessly, allowing you to create an exact custom length for calibrating micrometers, calipers, dial indicators, setting sine bars, or verifying precision machined parts. Whether for a climate-controlled inspection lab or rugged shop floor use, our gauge blocks deliver uncompromising accuracy.

Key Features & Advantages

• Superior Materials:

• Hardened Steel: Made from high-carbon, high-chrome alloy steel, specially heat-treated and cryogenically stabilized to prevent dimensional changes over time. Highly wear-resistant and economical.

• Zirconia Ceramic: Offers superior wear resistance (up to 10x longer life than steel), zero thermal expansion issues under normal use, absolute corrosion resistance (no rust), and will not burr if accidentally dropped.

• Exceptional Wringability: The measuring faces are micro-lapped to an incredibly high surface finish, ensuring a strong, vacuum-like adherence when wrung together, minimizing any cumulative error when stacking multiple blocks.

• Strict International Standards: Manufactured and inspected to strictly comply with ISO 3650, DIN 861, or ASME B89.1.9 standards for flatness, parallelism, and length tolerance.

• Clear Identification: Each block is permanently laser-etched with its exact nominal size and a unique serial number for traceability and calibration record-keeping.

• Protective Wooden Case: Supplied in a custom-fitted, high-quality wooden or heavy-duty plastic storage case with clearly marked slots for every block, protecting them from dust, moisture, and physical damage.

Why Partner with Pingyuan Zhenghao Machinery?

• Direct Manufacturer Savings: Bypass trading companies and source precision metrology equipment directly from our factory for highly competitive wholesale pricing.

• Comprehensive Selection: We offer sets ranging from small 32-piece sets for basic shop use up to comprehensive 112-piece sets for advanced calibration labs, in both Metric (mm) and Imperial (inch) sizes.

• Strict Quality Control: Every single gauge block is individually inspected in a temperature-controlled environment using advanced interferometers to guarantee its stated grade accuracy.

• OEM & Customization: We offer custom laser engraving of your brand logo on the blocks and the storage case, along with tailored packaging for retail distributors.

Frequently Asked Questions (FAQ) - Selection Guide

Q1: What is the difference between Grade 0, Grade 1, and Grade 2 gauge blocks?

A: The "Grade" determines the strictness of the manufacturing tolerance (accuracy).

• Grade 0 (Calibration/Reference): The highest accuracy. Used in temperature-controlled metrology labs to calibrate other inspection instruments and lower-grade gauge blocks.

• Grade 1 (Inspection): High accuracy. Used in quality control rooms for inspecting precision parts, setting gauges, and verifying machine tool accuracy.

• Grade 2 (Workshop): Standard accuracy. Used directly on the shop floor for setting up machines, checking fixtures, and general manufacturing measurements.

Q2: Should I choose Steel or Ceramic gauge blocks?

A:

• Steel is the traditional, cost-effective choice. It has the same coefficient of thermal expansion as most steel workpieces, making temperature compensation easier. However, it requires careful oiling to prevent rust.

• Ceramic is more expensive but highly recommended for frequent use. It does not rust, is non-magnetic, highly wear-resistant, and won't scratch or burr easily. It requires much less maintenance than steel.

Q3: What does "wringing" mean?

A: Wringing is the process of sliding two gauge blocks together with a slight twisting motion. Because their surfaces are so incredibly flat and smooth, all air is squeezed out, and molecular attraction (along with a microscopic film of oil/moisture) causes them to stick tightly together. This allows you to stack blocks to create precise custom lengths without adding any gap errors.

Q4: How should I care for my gauge blocks?

A: Never leave blocks wrung together overnight, as they can cold-weld or corrode. After use, wipe them clean with a lint-free cloth and chamois. For steel blocks, apply a light coat of anti-corrosion oil before returning them to their case. Always handle them with clean hands or cotton gloves to prevent acidic sweat from causing rust.

Establish absolute measurement confidence in your facility with our High Precision Gauge Block Sets.

Contact our sales team today for a complete catalog and bulk pricing.