Most prisons issue incident reports on a sliding scale from 100 series (highest severity) to 400 series (lowest severity).
In France, parents pay for their childcare on a sliding scale based on their income—the rest is subsidized by the government.
Aid will be offered on a sliding scale—families making less would pay less.
A set of rates that change according to a mathematical formula. The income tax, for example, is levied on a sliding scale, with the rich paying a higher percentage than the poor.