+1, a tension meter is useful primarily for getting one into the ballpark, especially inexperienced builders. It's rare to get even tension in a finished wheel, so don't try to do final truing with a tension meter. Also, I find the calibration between meters to be poor, so don't build to a specific quoted tension. Use your tension meter to measure a number of known, well built wheels to find what the proper range is with your specific tension meter, then build to that range. My personal tension meter is a Hozan C-737.