First of all, tip offs are for .22 receivers with a milled dovetail. The chart below shows Weaver's size chart for their traditional detachable rings. I would not recommend simply using the "fits objective" column. The best way to go about it is to shim up your scope in order to get an actual measurement of what you need. Once you have the number you can also shop around other ring manufacturers. I'm not a fan of the Weavers. It's not that they don't work, I just don't like how they work (scope rotates during tightening, scratches tube, etc.). I find Burris Zees are a good substitute.
Ring Size Saddle Height Fits Objective
1" LOW 0.089 THRU 38MM
1" MEDIUM 0.169 THRU 40MM
1" HIGH 0.332 THRU 44MM
1" EXTRA HIGH 0.560 THRU 50MM
1" SEE-THRU 0.750 THRU 50MM
30MM LOW 0.288 THRU 33MM
30MM HIGH 0.500 THRU 44MM
1" TIP-OFF 0.25 THRU 36MM
1" TIP-OFF SEE-THRU 0.750 THRU 50MM
