crock-testing

"A crock test is used to determine the amount of color that may be transferred from a sample fabric to another fabric by rubbing.
How This Test Works:
A sample fabric is fastened to the crock meter and then rubbed against a white test cloth. This test is done twice; first with a dry test cloth, then with a wet test cloth. The amount of color transferred to the test cloth is assessed by comparison with the AATCC Chromatic Transference Scale."

Werepatch

Sometimes I find little sketches in the margins of my sketchbooks that have no context. It took me a minute to figure out what the hell this one was.