Suhteskaalaks on nt termodünaamiline temperatuuriskaala, mille nullpunkt on absoluutne nulltemperatuur ja teine reeperpunkt on vee kolmikfaasipunkt, mis määratleb mõõtühiku kelvin (K), st et 1 K on 1/237, 16 vee kolmikpunkti termodünaamilisest temperatuurist.
An example of a proportional scale is the thermodynamic temperature scale, where the zero point is absolute zero and the second reference point is the triple point of water, which defines the unit of measurement - the kelvin (K); that is, 1 K is 1/273,16 of the thermodynamic temperature of the triple point of water.
