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?

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.

Will this show the tracks on magnetic audio tape?

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.

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Magnet Source Magnetic Field Viewer Card (Pack of 1)

Magnet Source Magnetic Field Viewer Card (Pack of 1)

Product ID: 7091802

Details

Brand
Master
Color
['White +
Global Trade Identification Number
Manufacturer
Magnet Source
Material
Plastic
Number of Pieces
1

📏Compact 2.5" x 4" laminated card

📚Includes clear, easy-to-follow instructions

🧲2 x 1.25" magnetic viewing strip

5994 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧲 Unlock the unseen world of magnets—carry science in your pocket!

POCKET SIZED STEM POWER - Compact, durable laminated card fits perfectly in your wallet or toolkit.
TRUSTED MAGNETICS BRAND - From Master Magnetics, a leader since 1976 in magnetic innovation.
HANDS ON MAGNETIC LEARNING - Ideal for educators and professionals to demonstrate real-world magnetism.
VISUALIZE INVISIBLE FORCES - Instantly reveal magnetic poles with precision viewing film.
PRECISION ENGINEERING INSIGHT - Accurately locate and count magnet poles for advanced analysis.

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 reveals the location and number of poles on permanent magnets. Designed for educators, STEM professionals, and enthusiasts, it offers a hands-on, portable tool to visualize magnetic fields with clear instructions included. Manufactured by Master Magnetics, a trusted brand since 1976, this card blends precision and convenience for magnetic field exploration.

Specifications

ASIN	B005HYCM8M
Best Sellers Rank	#132,626 in Office Products ( See Top 100 in Office Products ) #492 in Index Cards
Brand Name	Master Magnetics
Color	['White + Green']
Customer Reviews	4.2 4.2 out of 5 stars (202)
Global Trade Identification Number	00095421005635, 10095421005632
Included Components	Magnetic Field Viewer Card
Item Type Name	Magnetic Field Viewer Card
Manufacturer	Magnet Source
Manufacturer Part Number	DMVC-1BX
Material Type	Plastic
Model Number	DMVC-1BX
Number of Pieces	1
Shape	Rectangular
Size	2.5" x 4"
UPC	095421005635
Unit Count	1 Count

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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