Early A Body Variable Speed Wiper Motor & Switch

I'm interested, as my wipers have only low or high speed. Does this have intermittent wiping capability or ?? How would you describe the "variable speed" business?

What Steve said above. These variable units allow dial control to run wipers very slowly and through up to high speed, allowing various dialed speeds in between low to high. Old school "intermittent", sort of, ha ha ha!