A latching mechanism for an earring having two opposed ends. The dryness raiser includes a combined spray head, a steam heating chamber, a combustion chamber, and a mixing chamber. The first alignment pin is configured to be inserted through a first incision into a bone in a first orientation. Timing differences between pulse widths for the uncompensated PWM input signal and the pre-compensated PWM signal are used as feedback to provide closed loop width adjustment. Finally, signal intensity values are extracted from the features and their respective local background regions in the scanned image, and background-subtracted signal intensity values, background-subtracted and normalized signal intensity ratios, and variability information and confidence intervals are determined based on the extracted values.