button
Likely no one came back to push that button again for rinse, so the marketing/ad folks just claimed Fantastic Thorough Rinsing!!!!
Solid tubs were far more common in the 50's and 60's, usually with timed fill, and they were also usually only 8 to 10# machines, so there wasn't often a reason to run a "small" load. This one does list 14#, pretty impressive.
Norge had a "Touch-N-Go" button on some of their solid tubs, same thing. But then the rinse filled to the top. My 74 Sqpeed Queen offers 3 positions for the wash time fill, then the rinse fills to the top regardless. They do claim great rinsing, and they are correct.
Various brands seen on this website had a water level switch in the outer tub, to sense the beginnings of the overflow. Very good for a full wash, but no allowance for a half load.
Back to this Easy----I'd pay the extra water bill if I had this, it's cool. It looks 60's era, near the end for Easy