If my math skills serve me like they used to, no matter what the resolution, 1.75 (or 175%) is exactly half the size of 350%. So, on ZoomIt's scale, using an apples-to-apples comparison, 350% would be 3.5, if there were a 3.5 on ZoomIt's scale. As a reference, 2.0 on ZoomIt's scale represents exactly double the screen size, or 200%, no matter what the resolution. 400% or 4.0 would be four times the screen size. I could be wrong. I have been known to be wrong before. There was that one time back in 1987.