Sighting device

FIG. 1 is a front left isometric view of a sighting device showing my new design;

FIG. 2 is a rear right isometric view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken dash lines shown in the figures are for the purpose of illustrating non-claimed portions and form no part of the claimed design. The dot-dash broken lines in the figures represent an unclaimed boundary line and form no part of the claimed design. Neither the portions shown in broken dash lines nor the broken dash lines themselves form any part of the claimed design.