---
product_id: 16045861
title: "400EM-S"
brand: "johnson"
price: "818185₫"
currency: VND
in_stock: true
category: "Johnson"
url: https://www.desertcart.vn/products/16045861-400em-s
store_origin: VN
region: Vietnam
---

# 12-inch dual-scale precision Auto-Lock blade alignment CNC-machined square head 400EM-S

**Brand:** johnson
**Price:** 818185₫
**Availability:** ✅ In Stock

## Summary

> 📐 Elevate your precision game — because every detail counts!

## Quick Answers

- **What is this?** 400EM-S by johnson
- **How much does it cost?** 818185₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/16045861-400em-s)

## Best For

- johnson enthusiasts

## Why This Product

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

## Key Features

- • **Built to Endure:** Heavy-duty cast zinc head with chip-resistant e-coating and hardened scriber built for rugged job site demands.
- • **Dual-Scale Mastery:** Permanently etched stainless steel blade with inch and metric graduations for versatile, fade-proof accuracy.
- • **Level Up Your Craft:** Integrated acrylic vial lets you check level and plumb instantly, making this your all-in-one measuring powerhouse.
- • **Precision Perfected:** CNC-machined square head ensures flawless 45° and 90° measurements every time.
- • **Lock & Load Accuracy:** Auto-Lock blade assembly guarantees stable, precise alignment on every project.

## Overview

The Johnson Level & Tool 400EM-S is a 12-inch heavy-duty metal combination square engineered for professional-grade accuracy. Featuring a CNC-machined cast zinc head, permanently etched stainless steel blade with dual inch/metric scales, and an Auto-Lock blade assembly, it delivers reliable measurements for miter, depth, and straightedge tasks. Built tough with a chip-resistant finish and integrated level vial, this tool is designed to withstand rigorous job site use while ensuring precision for carpenters, machinists, and DIY pros alike.

## Description

Product Description Little tool, big results. Johnson's easy to use 12" metal combination square gives you the accuracy and precision you need for every job. Its stainless steel blade has english graduations of 1/8", 1/16" and 1/32" as well as metric graduations that are permanently etched in black for easy readability. It features a durable acrylic vial, heavy-duty cast zinc head with a black, chip-resistant e-coating finish, and hardened screw-in scriber that won't fall out so that this combo square can withstand even the roughest job site abuse. It was also designed with maximum accuracy in mind - its square head is CNC machined for greater accuracy, and the Auto-Lock™ blade assembly makes it easier to accurately line up your tool for use. From the Manufacturer Cast zinc head with computer-machined gauging edges for greater accuracy. Acrylic yellow barrel vial. Hardened, removable scriber. Steel blade with protective anti-rust coating is permanently stamped in 1/8ths, 1/16ths, and 1/32nds.

## Features

- COMBO SQUARE: This Johnson combination square was designed with maximum accuracy in mind - its square head is CNC machined for greater accuracy.
- STAINLESS BLADE: This combination square has a stainless steel blade with etched graduations in 1/8", 1/16", and 1/32"; as well as millimeter graduations that are permanently imprinted so they will never fade or degrade
- ACCURATE MEASUREMENTS: Auto-Lock blade assembly ensures precise alignment for optimal tool performance
- APPLICATIONS: Ideal machinist's square; straightedge; adjustable try square; miter square; marking gauge; and depth gauge
- PRODUCT SPECIFICATIONS: Accurately measure 45° and 90°, mark miter cuts and find depth as well as simple distance measurements. Built-in level vial for checking level and plumb

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00002N5O9 |
| Best Sellers Rank | #125,572 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #127 in Carpentry Squares |
| Brand | Johnson |
| Brand Name | Johnson |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 1,996 Reviews |
| Global Trade Identification Number | 00049448003679, 00049448400003 |
| Graduation Range | 1/32 inches |
| Item Dimensions L x W | 12"L x 5.5"W |
| Item Thickness | 1 millimeters |
| Item Type Name | Johnson Level & Tool 400EM-S 12-Inch Metal Combination Square |
| Item Weight | 4.8 ounces |
| Manufacturer | Johnson Level & Tool |
| Material | Stainless Steel , Zinc |
| Material Type | Stainless Steel, Zinc |
| Model | 400EM-S |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 400EM-S |
| Product Dimensions | 12"L x 5.5"W |
| Style | 420EM Inch/Metric Metal |
| Style Name | 420EM Inch/Metric Metal |
| UPC | 049448003679 049448400003 |
| Warranty Description | 1 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use. |

## Product Details

- **Brand:** Johnson
- **Color:** Black
- **Graduation Range:** 1/32 inches
- **Material:** Stainless Steel, Zinc
- **Style:** 420EM Inch/Metric Metal

## Images

![400EM-S - Image 1](https://m.media-amazon.com/images/I/51C3F6pxAaL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Frequently Bought Together

- Johnson Level & Tool 400EM-S Heavy Duty Professional Inch/Metric Metal Combination Square, 12", Silver, 1 Square
- Johnson Level & Tool 406EM Professional Inch/Metric Combination Square, 6", Silver, 1 Square
- IRWIN Tools Combination Square, Metal-Body, 6-Inch (1794468), Blue

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-09-24*