Some ring mandrels have a ring length to size guide near the top. It doesn't account for thickness of the wire used so it isn't super precise but it can get you in the ballpark. You can also get this information, measured in millimeters, in "The Jeweler's Bench Reference" by Harold O'Connor.
Did Valerie pick out those beads? The color is.. um... interesting.
What kind of ring stick are you using that measures the length of the wire?
Some ring mandrels have a ring length to size guide near the top. It doesn't account for thickness of the wire used so it isn't super precise but it can get you in the ballpark. You can also get this information, measured in millimeters, in "The Jeweler's Bench Reference" by Harold O'Connor.