Height positioning device comprising: (a) a body positionable at a height H between an upper height H2 and a lower height H1, wherein: lower height H1 ≤ H ≤ upper height H2 ; and b) at least one support system coupled to the body for the body , comprising b1) a gas spring , b2) a flexible traction means , and b3) at least one deflection element around which the flexible traction means is guided, the gas spring being located on a first side S1 of the deflection element and the body being located on a second side S2 of the deflection element , and the flexible traction means being a roller chain , characterized in that the roller chain essentially compensates for a progression of the gas spring on account of its weight, the at least one deflection element being a chain wheel or a chain pulley, and the roller chain being designed in such a way that at a set height H2 of the body , a length section L of the roller chain displaced over an apex P1 of an upper deflection element to its second side has a mass ΔMZ which exerts a force FZ on the gas spring , which essentially balances the progressive force ΔFP, the progressive force ΔFP resulting from the difference between the force FI of the retracted gas spring and the force FA of the extended gas spring . (a) a body positionable at a height H between an upper height H2 and a lower height H1, wherein: lower height H1 ≤ H ≤ upper height H2 ; and b) at least one support system coupled to the body for the body , comprising b1) a gas spring , b2) a flexible traction means , and b3) at least one deflection element around which the flexible traction means is guided, the gas spring being located on a first side S1 of the deflection element and the body being located on a second side S2 of the deflection element , and the flexible traction means being a roller chain , characterized in that the roller chain essentially compensates for a progression of the gas spring on account of its weight, the at least one deflection element being a chain wheel or a chain pulley, and the roller chain being designed in such a way that at a set height H2 of the body , a length section L of the roller chain displaced over an apex P1 of an upper deflection element to its second side has a mass ΔMZ which exerts a force FZ on the gas spring , which essentially balances the progressive force ΔFP, the progressive force ΔFP resulting from the difference between the force FI of the retracted gas spring and the force FA of the extended gas spring . b1) a gas spring , b2) a flexible traction means , and b3) at least one deflection element around which the flexible traction means is guided, the gas spring being located on a first side S1 of the deflection element and the body being located on a second side S2 of the deflection element , and the flexible traction means being a roller chain , characterized in that the roller chain essentially compensates for a progression of the gas spring on account of its weight, the at least one deflection element being a chain wheel or a chain pulley, and the roller chain being designed in such a way that at a set height H2 of the body , a length section L of the roller chain displaced over an apex P1 of an upper deflection element to its second side has a mass ΔMZ which exerts a force FZ on the gas spring , which essentially balances the progressive force ΔFP, the progressive force ΔFP resulting from the difference between the force FI of the retracted gas spring and the force FA of the extended gas spring . <EOS>