Encoders, optical encoders, magnetic encoders, incremental encoders, sine encoders, absolute encoders, end-shaft encoders, shaft encoders, hollow shaft encoders, cone shaft rotary encoders, single-turn encoders, multi-turn encoders, encoders with interface, fibre-optic light guides; encoders with high impact strength, encoders with high vibration resistance, shaft encoders with a clamping flange, angular position encoders with synchro flanges, speed sensing switches, encoder combinations consisting of acceleration sensor encoders with a Hall effect sensor encoder and rotary switches; sensors of acceleration; revolution counters, tachometers; shaft positioning systems consisting of control devices with measuring instruments, in particular a speed transmitter, spindle alignment sensors, magnetic sensors for linear and rotary applications; tachogenerators, tachogenerators without bearings, end shaft tachogenerators, shaft tachogenerators, cone shaft tachogenerators, tachogenerators with a housing having an internal bearing, tachogenerators with a high impact and vibration resistance; resolvers, shaft resolvers, hollow shaft resolvers; sensors of inclination; apparatus and machines with a control system for adjustment and control of machines