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This magnet is Made of steel, 12 mm in diameter, half red & half green for showing N & S poles , spray painted,
This magnet is made of steel, half red & half white for showing N & S poles spray painted,
Magnadur is a Read More-->
An annular magnet with face poles.with specifications . Internal dia 12.5 mm, External dia 30 mm, thickness 6.5 mm.
These are the magnets with magnetic square rubber sheet of size 50 mm x 50mm
The model defines the principle operation. It is cut way to demonstrate the inner constructional details.
With engine, unit fit for turning a small propellor, mounted on small motor to clarify change of solar energy into light.
Settled on finished wooden base, single barrel made of steel pipe with stopcock.
GRAVESANDE - Ring and ball, mounted on isolated handle ball.
GRAVESANDE - Ring and Ball with Chain. A device for showing thermal expension, including a captive brass ball secured to a mounted brass ring by a chin, Ring mounted on bar with a wooden handle. Th...
Comprising of a nickel plated copper vessel with external
vessel of teak wood fitted with bakelite top with opening for thermometer,
terminals associated with a loop of wire com...
One piece spinning with parallel sides & rolled rim.
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