Explore Newton’s laws of motion and demonstrate the equilibrium of forces with this economic tool. The lightweight design and suction cup feet enable placement on horizontal or vertical surfaces, including whiteboards. Included clamps securely hold spring scales in place while allowing for easy adjustments along the 360° protractor. Contents: • 360° protractor with suction cup feet • 4 clamps • 4 spring scales, 500g • Centering ring