The measuring force is proportional to the deflection (spring system) and dependent on the length of the stylus.• The maximum deflection must be recorded during the qualification (up to approx. 400 μm).• Rigidity of the VAST XXT TL1 depending on the stylus length:Note:The rigidity for a lateral deflection is different than for the shaft direction (see the 2 formulae below).Probing•