Dets afstand »1« til svingningsaksen i udsvingsplanet er lig med 1 m ± 5 mm. Pendulets afledte masse i forhold til dets stødcentrum er mo = 6,8 ± 0,05 kg.
It is at a distance ‘1’ from the axis of oscillation in the release plane which is equal to 1 m ± 5 mm. The reduced mass of the pendulum to its centre of percussion is mo = 6,8 ± 0,05 kg.