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Concrete Scale

A “concrete scale” is a technique that can be used to visually relate, re-express, and compare measures of extreme magnitudes or unfamiliar units.

Concrete scales use familiar and culturally appropriate visual metaphors to depict simple relationships of complex measurements, making it easer for a viewer to comprehend the measure.

Examples of this are: conversion/comparison, containment/nesting, unitization (defining an object as a new unit of measure), and analogy.

For more about concrete scales, see Using Concrete Scales: A Practical Framework for Effective Visual Depiction of Complex Measures.