---
product_id: 292708072
title: "Master Magnetics Magnet Source Field Viewer Card (Pack of 1)"
brand: "master magnetics"
price: "$42.46"
currency: USD
in_stock: true
reviews_count: 5
category: "Master Magnetics"
url: https://www.desertcart.ec/products/292708072-master-magnetics-magnet-source-field-viewer-card-pack-of-1
store_origin: EC
region: Ecuador
---

# 2.5" x 4" laminated card 2 x 1.25" magnetic viewing film Visualizes magnet poles & patterns Master Magnetics Magnet Source Field Viewer Card (Pack of 1)

**Brand:** master magnetics
**Price:** $42.46
**Availability:** ✅ In Stock

## Summary

> 🧲 Unlock the invisible world of magnets—see what others can’t!

## Quick Answers

- **What is this?** Master Magnetics Magnet Source Field Viewer Card (Pack of 1) by master magnetics
- **How much does it cost?** $42.46 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/292708072-master-magnetics-magnet-source-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

- • **Lightweight & Portable:** Only 18g—carry magnetic field visualization wherever you go.
- • **Compact & Durable Design:** Laminated 2.5" x 4" card fits perfectly in your toolkit or pocket.
- • **Instant Magnetic Insight:** Reveal hidden magnetic poles with precision viewing film.
- • **STEM-Ready Educational Tool:** Perfect for hands-on learning in classrooms and professional demos.
- • **Universal Magnet Compatibility:** Works seamlessly with all permanent magnets for quick diagnostics.

## Overview

The Master Magnetics Magnet Source Field Viewer Card is a compact, laminated tool featuring a 2 x 1.25" strip of specialized viewing film that reveals the location and number of poles on permanent magnets. Designed for educators, engineers, and STEM enthusiasts, this lightweight 2.5" x 4" card offers a hands-on way to visualize magnetic fields instantly, enhancing both learning and professional diagnostics.

## 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. 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: Es un juguete más para adulto, genial

## Features

- 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
- Amazing film to view the magnetization pattern of permanent magnets
- Made with 1.25-Inch wide x 2-Inch tall viewing film and instructions both laminated in 4-Inch wide x 2.5-Inch tall plastic card

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005HYCM8M |
| Capacity | Onе Paсk |
| Color | Multi Color |
| Customer Reviews | 4.1 4.1 out of 5 stars (192) |
| Date First Available | 4 May 2014 |
| Item Model Number | DMVC-1BX |
| Item Shape | Rectangular |
| Item model number | DMVC-1BX |
| Manufacturer | Magnet Source |
| Number of Pieces | 1 |
| Primary material | Plastic |
| Product Dimensions | 9.53 x 6.99 x 0.33 cm; 18 g |
| Publisher code | MATNM |
| Shipping Weight | 0.02 Kilograms |

## Product Details

- **Brand:** Master Magnetics
- **Colour:** Multi Color
- **Material:** Plastic
- **Shape:** Rectangular
- **Size:** Onе Paсk

## Images

![Master Magnetics Magnet Source Field Viewer Card (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/811+HJDR+fL.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

### ⭐⭐⭐⭐⭐ Review
*by D***H on 17 January 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.

### ⭐⭐⭐⭐⭐ Review
*by D***L on 26 August 2022*

Es un juguete más para adulto, genial

### ⭐⭐⭐⭐⭐ Review
*by N***S on 8 May 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! :)

## Frequently Bought Together

- Magnet Source Magnetic Field Viewer Card (Pack of 1)
- The Original Slinky Walking Spring Toy, 2.75-inch Diameter Metal Slinky, Fidget Toys
- The Hillman Group 123113 18 Aluminum Display Package, 50-Feet, 1-Pack

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-24*