Balancing apparatus, namely, balances for measuring unbalance of workpieces to be balanced and of the balanced workpieces; digital measuring apparatus, namely, vibration measurers, speedometers, equipment for assessing the unbalance and/or velocity of rotating parts; optical measurement apparatus, namely, electro-optical instruments for measuring the velocity and/or unbalance of rotors; shaft identification gauges; accessories for balancing machines, in particular sensors, namely, vibration s...