Gene, most print options allow you to print the image larger or smaller. You might have to look for it but it should be somewhere. For instance, the print screen of my PDF viewer has a Custom Scale option under Page Scaling.
Try printing the pattern and then measure some feature of the pattern. For example, if the feature you measure is 5" on the print and you want it to be 5.5", then try scaling the print at 5.5 divided by 5 = 1.1 Thus you would scale the next print by 110%. You might have to experiment with different scales depending on how exact you want the pattern to be.
Hope this helps,
Jim