A sensor which reacts on influences from an environment. The device includes a substrate and a plurality of layers formed over the substrate in the following sequence: a ternary nitride-based buffer layer, a first conductivity type nitride-based semiconductor layer, a light-emitting layer, and a second conductivity type nitride-based semiconductor layer. Ulteria salicifolia along with plants used traditionally including Asparagus racemosus, Foeniculum vulgare, and Ficus glomerata are used in formulations as a treatment for intestinal discomfort and as galactogogues. Within the passage port are a remotely controlled rudder for steering the craft, and at least one remotely controlled stabilization plate for controlling the pitch of the craft. The detection step comprises the phases of measuring the lateral position, an angle of pivoting, and a longitudinal position of the element, and the correction step includes phases of lateral movement, pivoting, and longitudinal movement of the element, apparatus elements perform the steps. The tape measure may include a manually powered retraction mechanism having a drive ratio of greater than 1:1.