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Gage blocks are precision measuring instruments essential for calibration and quality control in manufacturing and machining. Selecting the correct set and accessories ensures accuracy and reliability in your measurements, preventing costly errors and rework. Understanding the key factors involved in their purchase will lead to a more efficient and effective workshop environment.
COMPLETE SET: 14-piece gage block accessory set designed specifically for use with rectangular gage blocks for precision measurement applications.
VERSATILE APPLICATION: Compatible with standard rectangular gage blocks, this set provides essential accessories for dimensional measurement and calibration tasks.
PROFESSIONAL QUALITY: Manufactured by SPI, a trusted brand in precision measurement tools, ensuring reliability and accuracy in industrial applications.
COMPREHENSIVE KIT: Includes various accessories that enhance the functionality of your rectangular gage blocks for complex measurement setups.
MICROMETER CALIBRATION STANDARD: Used for checking spindle wear and accuracy, this gage block ensures proper calibration of micrometers, enabling precise dimensional verification in professional metrology environments.
PREMIUM STEEL CONSTRUCTION: Made from high-carbon, high-chrome steel, the block offers excellent hardness and wear resistance, ensuring durability and long service life while maintaining accuracy in calibration checks.
THERMALLY STABILIZED PERFORMANCE: Stabilized against thermal expansion, the block minimizes changes in size due to temperature fluctuations, supporting consistent, reliable calibration in controlled or workshop conditions.
TRACEABLE IDENTIFICATION: Each block is laser-etched with a unique serial number, ensuring traceability in inspection records and providing confidence in compliance with professional quality control standards.
HOLDING CAPACITY: This gage block holder accommodates up to 4 inches of rectangular gage blocks, providing a secure grip for precise measurement applications.
VERSATILE COMPATIBILITY: Designed specifically for use with rectangular gage blocks, this holder ensures stable positioning during calibration and measurement tasks.
PROFESSIONAL QUALITY: Manufactured by SPI, a trusted name in precision measurement tools, this gage block holder delivers reliable performance for industrial applications.
SINGLE UNIT DESIGN: Comes as a complete 1-piece holder, eliminating the need for additional components and simplifying your measurement setup process.
Our gage blocks are manufactured under carefully controlled conditions and inspected by the ASME B89.1.9-2002 standard, allowing for an accuracy of +/- 6 millionth for size under 1" block when used at room temperatures of 68 degrees Fahrenheit (or...
The gage blocks are made of fully seasoned alloy tool steel with hardened to 65 RC to provide resistance to wear, abrasion, and rust.
The measuring surface of the gage block are ground and micro-lapped to a mirror finished so the gage block can be wringable.
Accuracy: ±0.0001"，Ultra-high precision in eliminating system errors, striving for ultimate performance, with high return rate.
Scale：Each steel spacer block clearly marked for size,Clear scales enable people to read the values quickly and accurately,They are well-made and reliable.
Additionally：Four connecting screws are included to make any length desired.，4 screws for connecting spacers block and hex keys; Used for set-up work, setting sine bars, high build-up work and for machine work shops.
Inclusion：The space gage block set includes 36 steel spacer block, four screws and one hexagonal key.
HOLDING CAPACITY: This SPI gage block holder features a generous 10-inch holding capacity, perfect for securing rectangular gage blocks during precision measurement tasks.
PROFESSIONAL DESIGN: Engineered specifically for use with rectangular gage blocks, this holder provides stable and secure positioning for accurate dimensional measurements.
QUALITY CONSTRUCTION: Manufactured by SPI, a trusted name in precision measurement tools, this gage block holder is built for durability and consistent performance.
SINGLE PIECE DESIGN: The one-piece construction ensures stability and eliminates alignment issues that might occur with multi-piece holders.
DURABLE CONSTRUCTION: This block set is made of the finest grade of high carbon / chrome steel that has a low coefficient of thermal expansion; fully stress relieved and hardened to 65 RC
ACCURANT MEASUREMENT: The gage block set is lapped and polished to a very low micro-surface finish; they feature a ± 0.00005" accuracy
INDUSTRIAL STANDARD: Standard industrial sizes ensure complete interchangeability with all accessories
SET INCLUDES: The set of gage blocks includes a deluxe fitted case and certificate of inspection traceable to the National Institute of Standards & Technology
Last update on 2026-10-14 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Gage Blocks & Accessories
Understanding Gage Block Materials
Steel: The most common material, steel gage blocks offer excellent stability and durability. They are typically hardened and ground to precise dimensions. However, steel is susceptible to rust and requires careful maintenance and oiling.
Ceramic: Ceramic gage blocks are highly resistant to corrosion and wear, making them ideal for environments where rust is a concern. They are also less affected by temperature changes than steel, contributing to greater measurement stability.
Carbide: Tungsten carbide gage blocks provide exceptional hardness and wear resistance, outperforming both steel and ceramic. They are also dimensionally stable and non-magnetic, but they can be more brittle.
Key Features to Consider
Accuracy and Tolerance: Gage blocks are graded according to their accuracy. Common grades include AA (reference standards), A (inspection), and B (workshop). The required accuracy depends on the application.
Set Size and Configuration: Sets vary in the number of blocks and their sizes. Consider the range of measurements you need to perform. Some sets are designed for specific tasks, while others offer a broader selection.
Accessories: Essential accessories include holders, clamps, and measuring instruments like micrometers and calipers that work in conjunction with gage blocks. Ensure compatibility with your chosen blocks.
Maintenance and Care
Proper cleaning and oiling are crucial, especially for steel blocks, to prevent corrosion and maintain accuracy.
Store blocks in their protective cases to prevent damage and contamination.
Handle blocks with care to avoid nicks or scratches that can affect their precision.
Frequently Asked Questions
What is the difference between gage block grades?
Gage block grades indicate their accuracy and intended use. Grade AA is for the highest precision calibration, Grade A is for inspection, and Grade B is for general workshop use where slightly less precision is acceptable.
How do I choose the right size set?
Consider the range of measurements you commonly perform. A set with a good selection of standard metric or imperial sizes will cover most applications. You can also supplement a smaller set with individual blocks as needed.
Are ceramic gage blocks worth the extra cost?
Ceramic blocks offer superior resistance to corrosion and wear, and better thermal stability. If your work environment is harsh or requires extremely stable measurements, the investment can be justified by their longevity and reduced maintenance.
What accessories are essential?
Essential accessories include holders to create measuring assemblies, and cleaning supplies like lint-free cloths and a suitable oil for steel blocks. Compatibility between blocks and accessories is key.
How often should gage blocks be recalibrated?
Recalibration frequency depends on usage and the required accuracy. For critical applications, annual recalibration is common. For less demanding use, a less frequent schedule may suffice, but regular checks are always recommended.
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