Duo Level/ Digi Level Slope Measurement Systems allow, in a simple way, the determination of a machine’s longitudinal slope or cross-slope and indicate the slope values on a display unit. The Slope Measurement Systems consist of two components: a sensor that must be attached to the implement and a display located within easy reach of the operator and each deviation from the zero position, irrespective of its orientation, will be indicated by one or several LEDs. The Slope Measurement Systems has the feature that the display resolution is scalable, when the two dimensional dead centre positions is reached, the centre diode will be illuminated. The Duo Level/ Digi Level Slope Measurement Systems has various features such as easy mechanical mounting to the device to be levelled and easy adjustment, a distance of up to 30 metres between sensor and display, display in gradients and good zero point stability.