I read about this in another post about magnification ideas. This looks like a possibility for me. I need to know the dimensions of the platform part of it. The site doesn't show specifications. If any of you have this item (for the regular sized unit) would you let me know the size of the platform part. My sewing machine table has a hole at the top rear of the table (just behind my machine). If the platform would obstruct that hold, it won't work for me. Any input here would be appreciated. My fingers are crossed that this might just work for me.