Abstract: Methods and devices for ring sizing are described, including a ring sizing device that may be affixed to a platform, that allows users to evaluate ring sizes. The ring sizing device may include a stationary panel and a movable panel, where the stationary panel may include a bottom portion configured to be affixed to a mounting platform and a top portion having a top edge with one or more semicircular-shaped notches. The movable panel may be coupled with the stationary panel and configured to move relative to the stationary panel. The bottom edge of the movable panel also may include one or more semicircular-shaped notches and the combination of the panels may form one or more ring sizing holes that have an associated first height when the movable panel is in the first position and a larger second height when the movable panel is in the second position.

Abstract: Methods, systems, and devices for manufacturing a wearable device are described. A method for manufacturing a wearable device may include coupling a printed circuit board (PCB) to an inner ring-shaped housing that contains a plurality of apertures by aligning a plurality of sensors of the PCB with the plurality of apertures. The method may also include coupling an outer ring-shaped housing to the inner ring-shaped housing by surrounding the inner ring-shaped housing with the outer ring-shaped housing. Additionally, the method may include injecting a filler material through an additional aperture of the outer ring-shaped housing to fill a cavity defined by the inner ring-shaped housing and the outer ring-shaped housing, filling at least a portion of the plurality of the inner ring-shaped housing with the filler material.