Yes you can. You can change the width of the entire rating scale or individual columns. Because the default size of a rating scale is the width of the page, in order to get a table that is wider you will need to make your page wider. To do this, hover the cursor over the right edge of the page until you see the cursor icon change to a width cursor. You then click-and hold while moving the cursor right or left until the size is to you liking. Any existing rating scales will widen automatically when you resize the page.
Software Quality Engineer
Adobe Systems, Inc.