A short technical paper showing how to quantify warp tension using Reid Bryson's homemade tension meter, a ruler, and a scale. It derives a formula from the deflection of a warp end under a hanging weight (T = WL/4H) and its inverse for finding the deflection needed for a target tension. Worked examples show how a weaver can record a tension and transfer it to another loom or weaver. It notes limitations such as stretchy yarn and the added weight of the meter.