Ring & Ball Stem model 29 pieces set come in

29 pieces set come in a handy mesh bag with a guide

Fulcrum lever is graduated in centimeters and is balanced on the knife edge of the fulcrum by a transverse groove cut midway in the length of the lever

Lesson plan facilitates explanation of orbit and speed

Active ingredients: 200ml / 500ml Glycerin

Ring & Ball Stem model 29 pieces set come inThis Unit Demonstrates the Expansion of metal with heat and its contraction when cooled. When a Ball or Ring on a handle is Heated, the ball will not pass through the Ring, but when cooled the ball passes through the Ring Freely. Total Length: 260mm, Ball Diameter 25mm. Premium Quality: Ring & Ball is made of high grade construction all the way through, excellent build quality and proven reliability across the range. Designed for use in professional