Measuring bolt tension (indirectly via bolt stretch) is actually what is desired, but often torque is the only practical measurement which can be made.
Poldi pinge mõõtmine (kaudselt poldi venitamise abil) on see, mida tegelikult soovitakse, kuid sageli on pöördemoment ainus praktiline mõõtmine, mida saab teha.