This classic instrument is used to measure the value of G (gravitational constant) the same way Sir Henry Cavendish did in 1789. Introduction:Consists of a pair of small lead balls mounted on a "T" member suspended with a thin wire and a pair of large lead balls. Oil...

1.A great telescope for the beginner student. 2.Made from sturdy construction. Introduction:This refractor-type telescope is rugged, trouble free, and easy to operate, making it perfect for the beginning observer. Features a focal length of 350 mm, a power range of 20X-80X, and...

This magnetic compass has a clear visibility. The easy-to-carry case is made of durable plastic. Compass, Plastic 55mm Diameter.Our Star ProductsOur Main Market 55mm...

Learn map navigation and basic orienteering with this compass. Students can use this compass to locate true magnetic north. Introduction:The accurate steel needle rotates on precision pivots. The liquid-filled chamber stabilizes the needle quickly for fast readings and also...

1.This telescope is the perfect next step for students as they progress. 2.Made from sturdy construction. Introduction:Included are a 2"diameter lens, 600mm focal length, and two eyepieces: 6mm and 12mm.Our Star ProductsOur Main Market ...

A precise demonstration of the earthaas rotation that is electrically maintained. An ideal display for science classrooms. Introduction:This apparatus is a carefully constructed miniature version of Foucault’s device. Since the forces causing the precession are small, the...