Symcalc

Symcalc is a Thaumcraft addon mod for versions 1.6.4, 1.7.2 and 1.7.10. The mod was developed by meew0.

Overview
The mod adds an item called the Stability Calculator, which can be used to properly determine the stability value of a Runic Matrix by right-clicking on the Runic Matrix while holding the item. The Stability Calculator will show details on the numerical value of the Runic Matrix's stability, as well as the type of recipe instability it can withstand.

Research on the Stability Calculator can be unlocked by scanning a Runic Matrix, and Stability Calculator itself is crafted through infusion.