A golf training device is provided having an elongated housing and a mirror housing, with both the elongated housing and mirror housing having indicia imprinted thereon. The lens groups move such that a distance between the first and second optical lens groups is decreased and a distance between the second and third optical lens groups is increased at a scaling change to a long focal length edge. In embodiments, the prediction engine may tag one or more observed actions andor resource utilizations with the received tag, allowing for increased knowledge of application status when making predictions from the observed actions. Said list area comprises at least one valid entry referencing a free memory chunk. The phase locked loop circuit is phase locked to the reference crystal oscillator that is used to compensate for any initial dielectric resonator oscillator frequency errors because of manufacturing and for any drift because the temperature changes or aging. The temperature changes are controlled and the ALD and CVD processes are optimized by in situ temperature steps, for example in order to produce nanolaminates.