1 Neodymium Magnets OD : 10cm x ID : 5cm x T : 0.5cm Ring N35 You are buying ONE Magnet. Size: 10cm Outer Diameter x 5cm Inner Diameter x 0.5cm Thick Ring Nickel (Ni) Plated (silver-like shine) Grade: N35 - Extremely powerful magnetic material Pull Force is approximately 24.46 pounds per piece against a 1" steel plate NEODYMIUM MAGNETS ARE NOT SAFE FOR CHILDREN These rings are axially magnetized, so the strong North/South poles are on the flat sides.
The Magnehelic is used to measure fan and blower pressures, filter resistance, air velosity, furnace draft, pressure drop accross orifice plates, liquid levels with bubbler systems, and pressures in fluid amplifier or fluidic systems.
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