spectrum

Two poles named in plain words, a line between them, and a mark for everything you are placing. No units and no zero, so the only claims it makes are order and rough distance. That is a feature. A spectrum can hold qualities nobody has ever measured, as long as you can describe both ends concretely enough that two people would place the same item in the same neighborhood.

Two poles named in plain words, a line between them, and a mark for everything you are placing. No units and no zero, so the only claims it makes are order and rough distance. That is a feature. A spectrum can hold qualities nobody has ever measured, as long as you can describe both ends concretely enough that two people would place the same item in the same neighborhood.

Example

Best when the quality is real but has no unit, and you need order without pretending to precision.