What size is the cylindrical hole in the center of the cube?

1/2". The device comes with a magnet to to fit into the hole. A 1/2" by 3" cow magnet work fine as well.

What is the maximum size magnet that will fit in the tube?

Ours came with a three (3") inch cow magnet. I bought extras in case one gets lost as they do. The device works great with students demonstrating magnetic fields in 3D. Hope this is useful. Richard

What is the ID of the tube?

A three inch long 1/2" dia cow magnet fits perfectly. It also comes with its own cow magnet. 0.5'is the ID of this device.

American Scientific Magnetic Field Cube

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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R$1403

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Sold byAmazon BrazilDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧲 Unlock the invisible forces around you—magnetism made mesmerizing!

360 FIELD OBSERVATION - Observe magnetic patterns from every angle—no blind spots
MULTI MAGNET INTERACTION - Experiment with multiple magnets simultaneously for dynamic learning
CLASSROOM READY PROJECTION - Overhead projection compatible for group demonstrations and presentations
CRYSTAL CLEAR VISUALIZATION - Transparent acrylic lets you see magnetic fields in stunning detail
MESS FREE MAGNETIC EXPLORATION - No stray filings—pure focus on discovery

The American Scientific Magnetic Field Cube is a 3-inch clear acrylic cube filled with iron filings suspended in solution, enabling mess-free, 360-degree observation of magnetic fields. Designed for hands-on learning, it supports multiple magnets and is ideal for classroom demonstrations with overhead projection capability.

Specifications

ASIN	B076P3MR67
Age Range Description	Kid
Best Sellers Rank	724,422 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 4,052 in Science Curriculum Resources
Brand Name	American Scientific
Colour	Clear With Black Iron Filings
Educational Objective	Understanding of Magnetic Fields
Is Assembly Required	No
Item Dimensions	11.4 x 10.2 x 11.4 centimetres
Manufacturer	American-Scientific
Material Type	Acrylic
Minimum Age Recommendation	216.00
Number of Players	1
Operation Mode	Manual
Size	Small
UPC	730052000733

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