Viewing device

The design is the visual features of the ADD-ON CLIP FOR AN AUGMENTED REALITY VIEWER shown in solid lines in the drawings, whether those features are of shape, configuration, ornament, or pattern, or are a combination of any of these features. The portions of the article shown in stippled lines do not form part of the design. Drawings of the design are included. FIG. 1 is a front view of an ADD-ON CLIP FOR AN AUGMENTED REALITY VIEWER; FIG. 2 is a rear view of Fig. 1; FIG. 3 is a top plan view of Fig. 1; FIG. 4 is a bottom view of Fig. 1; FIG. 5 is an end view from right to left of Fig. 1; and FIG. 6 is an end view from left to right of Fig. 1.