1962 Catalina wiper assembly?
 

On my 62 Catalina there are two positions for the wiper transmission or pivot on the drivers side (in the cowl not the cowl screen). Was this used on some models to have same stroke v opposing wiper movement?Thanks.

One pair of holes is for single speed wipers (both blades point towards the right) and the other for the two speed (blades point towards the center)

Thanks for the knowledge.