You know what it looks like… but what is it called?
TAKE THE QUIZ“analog scale”
We have one entry that includes the term analog scale.
visual analog scale
noun: a testing technique for measuring subjective or behavioral phenomena (as pain or dietary consumption) in which a subject selects from a gradient of alternatives (as from "no pain" to "worst imaginable pain" or from "every day" to "never") arranged in linear fashion —abbreviation VAS
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Merriam-Webster unabridged