---
product_id: 7091802
title: "Magnet Source Magnetic Field Viewer Card (Pack of 1)"
brand: "master magnetics"
price: "$448"
currency: MXN
in_stock: true
reviews_count: 9
url: https://www.desertcart.mx/products/7091802-magnet-source-magnetic-field-viewer-card-pack-of-1
store_origin: MX
region: Mexico
---

# Compact 2.5" x 4" laminated card 2 x 1.25" magnetic viewing film strip Visualizes magnetic poles instantly Magnet Source Magnetic Field Viewer Card (Pack of 1)

**Brand:** master magnetics
**Price:** $448
**Availability:** ✅ In Stock

## Summary

> 🧲 Unlock the invisible world of magnets—see the unseen, own the knowledge!

## Quick Answers

- **What is this?** Magnet Source Magnetic Field Viewer Card (Pack of 1) by master magnetics
- **How much does it cost?** $448 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/7091802-magnet-source-magnetic-field-viewer-card-pack-of-1)

## Best For

- master magnetics enthusiasts

## Why This Product

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

## Key Features

- • **Instant Pole Detection:** Reveal the exact location and number of magnetic poles with a quick glance through the specialized viewing film.
- • **No Batteries, No Hassle:** 100% passive technology means zero power needed—always ready when curiosity strikes.
- • **Durable Laminated Design:** Built to withstand daily use in labs, classrooms, or fieldwork without wear or tear.
- • **STEM-Ready Educational Tool:** Perfect for professionals and educators to demonstrate real-world magnetism concepts with hands-on clarity.
- • **Pocket-Sized Magnetic Insight:** Carry a sleek, durable card that fits right in your wallet or toolkit for on-the-go magnetic field detection.

## Overview

The Magnet Source Magnetic Field Viewer Card is a compact, laminated plastic card featuring a 2 x 1.25" strip of specialized viewing film that visually reveals the location and number of poles on permanent magnets. Designed for educators, STEM professionals, and curious minds, this battery-free tool offers instant magnetic field visualization in a durable, pocket-friendly format.

## Description

The Magnet Source Magnetic Field Viewer Card contains a 2 x 1.25" strip of viewing film to reveal the location and number of poles on a permanent magnet. The laminated card measures 2.5" x 4" and contains instructions and film.Science education products incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.Master Magnetics manufactures and distributes magnets for use in educational, commercial, and industrial environments under the Magnet Source brand. Founded in 1976, the company is headquartered in Castle Rock, Colorado.

Review: great product, works really well. - great product, works really well. I used for a service class and passed on the link where to buy it to my service class so it can be used to find damage to an magnetic encoder strip we use on our products.
Review: Handy to see what items are magnatized - It was interesting seeing different magnetic items with this. It's not very effective with weak magnets though, as would be expected. This is just for those who are as curious as I am and just like to see how things work! :)

## Features

- Plastic
- Card contains a 2 x 1.25" strip of viewing film to reveal the location and number of poles on a permanent magnet
- 2.5" x 4" laminated card contains instructions and film

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005HYCM8M |
| Batteries required | No |
| Best Sellers Rank | #241,774 in Office Products ( See Top 100 in Office Products ) #745 in Index Cards |
| Brand | Master Magnetics |
| Color | ['White + Green'] |
| Customer Reviews | 4.2 4.2 out of 5 stars (199) |
| Fabric Type | Plastic |
| Global Trade Identification Number | 00095421005635 |
| Included Components | Magnetic Field Viewer Card |
| Item Weight | 0.634 ounces |
| Item model number | DMVC-1BX |
| Manufacturer | Magnet Source |
| Material | Plastic |
| Number of Pieces | 1 |
| Product Dimensions | 3.75 x 2.75 x 0.13 inches |
| Shape | Rectangular |
| Size | 2.5" x 4" |
| UPC | 095421005635 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Master Magnetics
- **Color:** ['White + Green']
- **Global Trade Identification Number:** 00095421005635
- **Manufacturer:** Magnet Source
- **Material:** Plastic
- **Number of Pieces:** 1
- **Shape:** Rectangular
- **Size:** 2.5" x 4"
- **UPC:** 095421005635
- **Unit Count:** 1.0 Count

## Images

![Magnet Source Magnetic Field Viewer Card (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/811+HJDR+fL.jpg)
![Magnet Source Magnetic Field Viewer Card (Pack of 1) - Image 2](https://m.media-amazon.com/images/I/715ZUAGU-UL.jpg)
![Magnet Source Magnetic Field Viewer Card (Pack of 1) - Image 3](https://m.media-amazon.com/images/I/81g4YWeGJIL.jpg)
![Magnet Source Magnetic Field Viewer Card (Pack of 1) - Image 4](https://m.media-amazon.com/images/I/81eTTrSaVOL.jpg)
![Magnet Source Magnetic Field Viewer Card (Pack of 1) - Image 5](https://m.media-amazon.com/images/I/91lI5TFvH-L.jpg)

## Questions & Answers

**Q: Can you write on this causing a magnetic image to appear if you attached a small neodymium magnet to the end of dried up pen?**
A: Only if you have a small enough magnet, otherwise the characters would be so large you could only write one word.After reading "Sadly, no." I tried with a small motor magnet and was able to produce "123" and "Hi" that were legible from the front.Not sure if that is useful for you.

**Q: Will this show the tracks on magnetic audio tape?**
A: Not usefully. It might just show some magnetic field on a cleverly recorded tape (eg: Like a lightning flash recorder), but neither the resolution nor the contrast would show normal audio tracks. That is simply not it's function.

## Customer Reviews

### ⭐⭐⭐⭐⭐ great product, works really well.
*by D***H on January 17, 2024*

great product, works really well. I used for a service class and passed on the link where to buy it to my service class so it can be used to find damage to an magnetic encoder strip we use on our products.

### ⭐⭐⭐⭐⭐ Handy to see what items are magnatized
*by N***S on May 8, 2017*

It was interesting seeing different magnetic items with this. It's not very effective with weak magnets though, as would be expected. This is just for those who are as curious as I am and just like to see how things work! :)

### ⭐⭐⭐⭐ works at a basic level
*by M***N on March 6, 2023*

This works at a basic level, and what I mean by that is, it will show magnetic fields, but not very clearly. If you have trouble reading them, or looking for more defined readings in general, I would look at another viewer.

## Frequently Bought Together

- Magnet Source Magnetic Field Viewer Card (Pack of 1)
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*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-28*