As a next generation torque transducer Kistler Staiger Mohilo has developed compact rotational torque transducers with slipringless data transmission. No loss of signal due to slipring bouncing and no wear and tear at all. The Mini-Smart torque sensor with rotating measuring shaft is suitable both for dynamical detection of starting torque and breakway torque for bolting and assembly techniques and for quality assurance in production and laboratory. Due to its standardized connections the device can be quickly adapted to air, electronic and pulse tools.