The ornamental design for a hygrometer for humidors, as shown and described.
FIG. 1 is a front perspective view of a hygrometer for humidors, illustrating our new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a front view thereof;
FIG. 7 is a rear view thereof; and,
FIG. 8 is an exploded view of the hygrometer of FIG. 1.
The broken lines shown in FIG. 7 are included for the purpose of illustrating portions of the hygrometer for humidors and form no part of the claimed design.