Magdeburg Hemisphere Magnetic plus joining pin) and instructional

plus joining pin) and instructional guide with suggested classroom activities

Electric Model of Water Circulation

Cylinder Set of 3 Kinds Metal

The Scalpel handles come in different sizes and shapes

For children less than 12 years

Magdeburg Hemisphere Magnetic plus joining pin) and instructionalA traditional demonstration apparatus brought up to date, it consists of 2 plastic hemispheres with an effective O ring seal and 6mm plastic valve. When evacuated a force in excess of 1400N is required to separate them. Can be evacuated with a Hand Operated Pump. Size: 12cm x 12cm x 6cm. Premium Quality: Magdeburg Hemisphere is made of high grade construction all the way through, excellent build quality and proven reliability across the range.