Lotus Connect Store › Eisco Labs Hooke's Law Spring Eisco Labs Hooke's Law Spring $4.29 3 spring set for use with Visual Scientifics Hooke's Law ApparatusSpring Cylinder Length (Between Loops): 1.25inSpring Cylinder Diameter: 0.38inThe Hooke's Law spring set is used as a piece of the Visual Scientifics Hooke's Law kit (SKU# PTHOKL). Quantity: Add To Cart Added! 3 spring set for use with Visual Scientifics Hooke's Law ApparatusSpring Cylinder Length (Between Loops): 1.25inSpring Cylinder Diameter: 0.38inThe Hooke's Law spring set is used as a piece of the Visual Scientifics Hooke's Law kit (SKU# PTHOKL).