Trouble Printing PDF pattern to scale

I'm totally new here, and I'm excited to start sewing my first ever Oliver + S pattern. I'm working with the Cappuccino Dress Pattern, and I've tried printing it from two different computers (one Mac and one PC), and two different printers, each time we've carefully ensured that the scale is set to 100%, not scale to fit, and each time the test square is so slightly under an inch that I'm wondering if it's meant to be that way or what I need to do. I've attached a picture (excuse my chipped polish;-)). I realize it's literally 1/32nd short, so I don't know if that's normal or not, but I'm a quilter and used to working precisely in small pieces, and this is definitely under an inch. Should I try increasing the scale to slightly over 100% until I get it right on the inch line? Or would I have better luck taking it to a copy center? I have printed other PDF patterns correctly (and easily), so I've been surprised to struggle with this one so much. Thanks for any tips!