Rapidly interpolate values for use as a scale.
Scales can help provide structure to responsive designs. Polate approaches this through basic interpolation, or specifying a low value, a high value, and then finding the numbers in between. You can use the output to set typographic units or create proportional media queries that span wide ranges.
More thanks to Erik Van Blokland & Nick Sherman.
Check out an example of four-master glyph interpolation here.