Some aspects of the present disclosure relate to techniques for measuring an angular position of a rotating shaft. This allows the lamp socket to be used in the manufacture of conventional light fixtures but qualify as high energy efficient light fixtures under California’s Title 24 or similar lighting regulations from other governing bodies. A plurality of oilfield modules are positioned in an application. In order to accurately sample color within an array of two-color photo-detectors without a color filter array, two different thicknesses for the upper photo-detector elements of adjacent two-color photo-detectors are used. The tension is applied by one or more weights acting on the traction element via a tension transmitter, it being possible for the tensile force acting on the body part to be varied or stopped at the beginning, during andor at the end of the treatment by a counteracting force applied by a motor. The data pertaining to the selected component and the configuration of the component is stored.