ADJUSTABLE SCALE || Complete apparatus has a 15cm adjustable scale, marked in mm, to help prevent parallax error
30CM SUPPORT ROD || Scale is mounted on sturdy 30cm support rod
STURDY WOODEN BASE || Apparatus is situated on a sturdy wooden base
MASSES INCLUDED || Includes 9 slotted masses and hanger, each weighing 10g, for a total of 100g
PERFECT FOR PHYSICS CLASSROOMS || Ideal for demonstrating Hooke's Law which states the force needed to extend or compress a spring by some distance is proportional to that distance