There's "View Scale" and "Drawing Scale," which are two different things.

I draw everything at 1:1 scale, so an inch equals an inch.

The Scale box at the bottom right of the screen determines the View scale, or, how big the drawing appears on your monitor (regardless of how big it will print).

Click on the View toolbar and use the arrow buttons to zoom the drawing in and out on your screen. This does not effect the actual scale of the drawing.