Complete with stand, masses and springs
Cast iron stand for high stability
Economic!

This complete device makes it possible to verify that the elongation of a spring is proportional to the intensity of the force exerted on it.
The scale of 15 cm graduated to the millimetre is positionable on a rod of 300 mm.
The graduations are screen printed on a mirror to avoid any parallax error.
Delivered complete with stem, 3 springs of different stiffness, a weight stand, a set of Slotted masss.