---
product_id: 616769349
title: "Mitutoyo Steel Rectangular Gage Block, ASME Grade AS-1, 3.0 mm Length"
brand: "mitutoyo"
price: "$66.05"
currency: USD
in_stock: true
reviews_count: 9
url: https://www.desertcart.ec/products/616769349-mitutoyo-steel-rectangular-gage-block-asme-grade-as-1-3
store_origin: EC
region: Ecuador
---

# ASME Grade AS-1 3.0 mm Length High-carbon Steel Mitutoyo Steel Rectangular Gage Block, ASME Grade AS-1, 3.0 mm Length

**Brand:** mitutoyo
**Price:** $66.05
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Measurement Game!

## Quick Answers

- **What is this?** Mitutoyo Steel Rectangular Gage Block, ASME Grade AS-1, 3.0 mm Length by mitutoyo
- **How much does it cost?** $66.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/616769349-mitutoyo-steel-rectangular-gage-block-asme-grade-as-1-3)

## Best For

- mitutoyo enthusiasts

## Why This Product

- Trusted mitutoyo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Crafted from high-carbon, high-chrome steel for exceptional hardness and wear-resistance.
- • **Wringing Wonder:** Rectangular design ensures flawless wringing for precise measurements.
- • **Precision Perfected:** Achieve unparalleled accuracy with ASME-certified flatness and length.
- • **Laser-etched Clarity:** Nominal length marked with laser-etched characters for easy readability.
- • **Traceability Matters:** Each block features an etched identification number for complete traceability.

## Overview

The Mitutoyo Steel Rectangular Gage Block is a high-precision tool designed to meet ASME standards, ensuring accuracy in flatness, length, and surface finish. Made from durable high-carbon, high-chrome steel, this gage block is built for longevity and reliability, featuring a rectangular base for optimal wringing and laser-etched markings for easy identification.

## Description

The Mitutoyo grade AS-1 rectangular gage block is made of steel, has its nominal length engraved in metric [millimeter (mm)], and is supplied with a Mitutoyo inspection certificate that states that the block meets American Society of Mechanical Engineers (ASME) B89.1.9-2002 grade standard for flatness, length, parallelism, and surface finish. The inspection certificate specifies the deviation of the individual block from its nominal length. Gage blocks are commonly used to calibrate fixtures and precision instruments in workshop, inspection, and dimensional metrology applications, to inspect tools such as mounting tools, cutters, fixtures, and mechanical parts, and in the gage manufacturing process itself.This grade AS-1 gage block is commonly used for workshop and inspection applications to calibrate fixtures and precision instruments, to inspect a variety of tools such as mounting tools, cutters, fixtures, and mechanical parts, and for manufacturing gage applications. It is made of high-carbon, high-chrome steel which has a high hardness for minimum deterioration, and is selected for its wear-resistance. This gage block has a rectangular base for accurate wringing. Nominal length is measured in metric [millimeter (mm)], and indicated with laser-etched, black characters. The length of a gage block is usually slightly shorter than its stamped nominal length, to account for the thin layer of oil or wring film used when two or more blocks are wrung together. An identification number is laser-etched on the block for traceability. The block has a depth of 9 millimeters. It comes in a carrying case with a padded, formed interior.This gage block is supplied with a Mitutoyo inspection certificate [National Institute of Standards in Engineering (NIST)-traceable] that the block meets ASME B89.1.9-2002 standard for flatness, length, parallelism, and surface finish.Gage blocks (also called gauge blocks, Hoke blocks, Jo blocks, slip gages, and Johansson gages) are blocks used to calibrate measuring equipment and to standardize the measurement of length in manufacturing industries. They are commonly made of precision-ground steel, ceramic, or carbide material, and have a square or rectangular base. Each block has a unique identification number. Length is in inch or millimeter measurement. They can be sold individually, and are also sold in sets with blocks of varying lengths. Gage blocks can be wrung together to create a required length. Wringing is the process of lapping blocks together with a small amount of oil. They are standardized by grade, which refers to the tolerance or deviation of an individual block from its nominal length. Gage block grades are defined for flatness, length, parallelism and surface finish. Some grades of gage blocks meet standards such as ASME, Association for Iron and Steel (AIST), and International Organization for Standards (ISO). Application and required level of accuracy dictate which grade of gage block should be used. Some manufacturers provide an internally-generated certificate of inspection to verify that a gage block meets grade standards. Gage blocks can also go through a calibration certification process to verify measurement accuracy. Calibration is performed by an accredited facility. Gage blocks are commonly recalibrated after use to ensure dimensional accuracy. If a gage block does not meet calibration standards, it should no longer be used. Both a certificate of inspection and a calibration certificate specify the deviation from the nominal length.Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.

## Features

- 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

## Images

![Mitutoyo Steel Rectangular Gage Block, ASME Grade AS-1, 3.0 mm Length - Image 1](https://m.media-amazon.com/images/I/81HuY1YLBXL.jpg)

## Available Options

This product comes in different **Item Thickness String, Item Length String, Number of Items, Item Width String** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Super quality stands the name and worth the money
  

*by A***1 on Reviewed in the United States on June 8, 2021*

It came with a certificate and in Mitutoyo packaging box. Wrapped in the usual anti corrosive paper inside a plastic bag. Slightly oiled. High accuracy stands to the Mitutoyo name. Both sides are mirror shining finish. Amazing and astonishing quality.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great workshop gage block
  

*by C***S on Reviewed in the United States on January 18, 2015*

These gage blocks are great.  I use them to check my mics, calipers, and height gage.  Only the nominal length is calibrated.  Grade AS-1 means that they are calibrated to plus or minus 0.2 microns.  The rule of thumb is to use a gage block calibrated to a level 10 times more accurate than the tool you will use it to check.  In this case, Grade AS-1 is sufficient to check my micrometer with a resolution of 0.002mm.  NIST has a nice gage block handbook available for download http://www.nist.gov/calibrations/upload/mono180.pdf

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Five Stars
  

*by G***R on Reviewed in the United States on March 18, 2016*

Great Value!

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-01*