two speed or not......
i would guess from the picture (it's hard to tell) but i would guess it is probably the single speed.
although it has numbers on both sides of the dial, so does the single speed.
from what i remember seeing in pictures, the 2 speed has "brisk" on the left hand side of the knob and "gentle, delicate, or slow" on the right hand side of the knob.
and the single speed has the time go from left to right all around the knob from 1 to 12 or 15 minutes, i can't remember exactly right now. but i think it's 12 minutes.
and in the pictures of this simplicity twin tub, i can't see the word "brisk" on the left hand side of the knob. so, i'm assuming it's a single speed???