Quick Answer: The Cylindrical Magnet, Pair, Alnico is a pair of aluminium-nickel-cobalt rod magnets offered in 10mm diameter and lengths of 50mm to 150mm. A pair of mild steel keepers is included.
Last updated: October 2026
Key Features
Pair of cylindrical Alnico (aluminium-nickel-cobalt) rod magnets
10mm diameter in 50mm, 75mm, 100mm or 150mm lengths
Poles marked with two-colour spray paint (red/blue or red/white)
Mild steel keepers (pair) to close the flux circuit in storage
Technical Specifications
Specification
Value
Material
Alnico alloy (aluminium-nickel-cobalt)
Shape
Cylindrical rod
Sizes (D x L)
10mm x 50mm / 10mm x 75mm / 10mm x 100mm / 10mm x 150mm
Pole marking
Red/blue or red/white paint
Keepers
Mild steel, pair
About This Product
Cylindrical magnets are used for field-mapping with plotting compasses or iron filings and for induction experiments, where a rod magnet is pushed into and out of a coil. The narrow shape slides easily through solenoids and coil formers.
Frequently Asked Questions
What sizes are the cylindrical Alnico magnets made in?
They are 10mm in diameter, in lengths of 50mm, 75mm, 100mm or 150mm.
Are keepers supplied?
Yes. A pair of mild steel keepers comes with the magnets.