1957 Westinghouse Sand test - Washing Machine With Revolving Rotator Ad

This original 10.5 x 13.5 magazine ad from 1957 promotes the Westinghouse revolving rotator washing machine as an improvement over the existing agitator concepts.  They called it the Sand test, and they show pictures of their towel versus those washed in their competitor's washing machines so that you could be the judge.