Best Inch Gage Blocks in 2026
Daisy
Last Updated: Jul 17, 2026
Daisy
Last Updated: Jul 17, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| MSI Viking | 8.07 | ❌ | ❌ | ❌ |
Grade AS-1 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear-resistance
Rectangular base for accurate wringing
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade 0 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear resistance
Rectangular base for accurate wringing
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade 0 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear resistance
Rectangular base for accurate wringing
Nominal length in metric [millimeter (mm)] units indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Can be used for checking spindle wear on outer diameter (OD) micrometers
Sized to check different degrees of spindle rotation
Steel blocks are made from high-carbon, high-chrome steel to reduce wear and corrosion
Thermally stabilized to reduce changes in gage block length over time
Laser-etched with individual serial number for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| MSI Viking | 8.62 | ❌ | ❌ | ❌ |
Grade 0 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear-resistance
Square base for accurate wringing, to attain a height reference standard, and to make a dedicated inspection jig
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade AS-2 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear-resistance
Rectangular base for accurate wringing
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade AS-1 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear-resistance
Rectangular base for accurate wringing
Nominal length in metric [millimeter (mm)] indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Micrometer inspection gage blocks are sized for use with a Mitutoyo Micro Checker (sold separately)
Grade 0 gage blocks supplied with a Mitutoyo certificate of inspection that the blocks meet American Society of Mechanical Engineers (ASME) B89.1.9
High-carbon, high-chrome steel provides high hardness and wear-resistance
Rectangular shape for accurate wringing
Nominal length (in inches) indicated with laser-etched, black characters
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade 0 gage blocks supplied with a Mitutoyo certificate of inspection that the blocks meet American Society of Mechanical Engineers (ASME) B89.1.9
High-carbon, high-chrome steel provides high hardness and wear-resistance
Rectangular shape for accurate wringing
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade 00 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
Ceramic block for dimensional stability and thermal expansion resistance
Rectangular base for accurate wringing
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Calibrated gage block set of nine rectangular blocks measuring 0.0625" to 2.0", for use with the Mitutoyo Micro Checker (sold separately) to inspect micrometers
Blocks (0.0625", 0.100", 0.125", 0.200", 0.250", 0.300", 0.500", 1", and 2") are constructed of high-carbon, high-chrome steel for durability and to minimize length changes
Comes with optical parallel (0.5" thick) for inspecting parallelism and flatness of measuring faces
Meets ASME B89.1.9 standards, grade AS-1, for dimensions and parallelism
Includes a Mitutoyo Certificate of Calibration that the tool has been calibrated, and meets the International Organization for Standardization/International Electrotechnical Commission (ISO/IEC) 17025 International Standard for testing and calibration laboratories
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Can be fixed a series of gage blocks to be Micro Checker used for micrometer inspection
Can be measured in both vertical and horizontal posture
Parallelism is measured by attaching the optical parallel (optional accessory) to the GB set~
Country of origin: Japan
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade AS-2 gage blocks supplied with a Mitutoyo certificate of inspection that the blocks meet American Society of Mechanical Engineers (ASME) B89.1.9
High-carbon, high-chrome steel provides high hardness and wear-resistance
Square base for accurate wringing, to attain a height reference standard, and to make a dedicated inspection jig
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Grade AS-1 gage block supplied with a Mitutoyo certificate of inspection that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 standard for flatness, length, parallelism, and surface finish
High-carbon, high-chrome steel provides high hardness and wear-resistance
Square base for accurate wringing, to attain a height reference standard, and to make a dedicated inspection jig
Nominal length (in inches) indicated with laser-etched, black characters
Identification number etched in block for traceability
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Micrometer inspection gage blocks are sized for use with a Mitutoyo Micro Checker (sold separately)
Grade 0 gage blocks supplied with a Mitutoyo certificate of inspection that the blocks meet American Society of Mechanical Engineers (ASME) B89.1.9
High-carbon, high-chrome steel provides high hardness and wear-resistance
Rectangular shape for accurate wringing
Nominal length in metric [millimeter (mm)] indicated with laser-etched, black characters
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
For use with square gage blocks
Helps assemble gage blocks into a precision measuring instrument
Includes 27 pieces for assembling gage blocks
Provided with wooden case for storage and protection
Measurements in inches for applications with these units
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Mitutoyo | 16 |
We've carried out a comprehensive analysis of 367 reviews on gage blocks, using our selection criteria to identify the best options in the test, measure & inspect. Our findings reveal that most customers typically select gage blocks priced around $428.16, with top brands including wen, mitutoyo, shars, fowler, findmall, tiezhi, texalan, kimllier and tmteck and neitra
Our team of expert editors reviewed these high-quality items and handpicked the top 16 gage blocks for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the test, measure & inspect category. These include amazon.com, msi viking, discount machine shop, findmall, meriant, texalan, kimllier, tmteck and funomo and all industrial tool supply .
We are dedicated to assisting our users in finding the right blocks Products based on their needs, saving them considerable time when choosing which gage blocks to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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