Eisco Labs Tension Spring No. 10, Pack of 10 Glass Funnels_Separating Funnels Range-rated 50mm double-concave glass lens

Range-rated 50mm double-concave glass lens spanning 300-1000mm focal lengths

Thirteen nickel-plated steel forks spanning C 236Hz to C 512Hz at +/-5% accuracy

and ring magnets with plotting compasses

Needle valve and flame stabilizer add precision control to this nickel-plated micro Bunsen burner running on LPG or butane for small-flame work

and burettes up to 4

Eisco Labs Tension Spring No. 10, Pack of 10 Glass Funnels_Separating Funnels Range-rated 50mm double-concave glass lensTension spring from Eisco Labs Assorted Spring Set (PH0115AS). Length is 25mm and diameter is 15mm. These springs are sold as a pack of 10. The sturdy, variable sized, compression and extension springs provide the perfect tools for studying motion of mass on a spring, Hooke's Law, potential energy, etc. They provide a visually and kinesthetically effective method for studying the physics of springs.