FIG. 1 is a top, front, isometric view of my new ornamental design for an adjustable rod clamp, adjusted to a first position;
FIG. 2 is a bottom, front, isometric view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 3 is a front elevational view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 4 is a rear elevational view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 5 is a right side elevational view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 6 is a left side view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 7 is a top plan view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 8 is a bottom plan view of the adjustable rod clamp of FIG. 1, adjusted to the first position;
FIG. 9 is a top, front, isometric view of the adjustable rod clamp of FIG. 1, adjusted to a second position;
FIG. 10 is a bottom, front, isometric view of the adjustable rod clamp of FIG. 1, adjusted to the second position;
FIG. 11 is a top, front, cross-sectional isometric view, taken along plane 11-11 of FIG. 9, of the adjustable rod clamp of FIG. 1, adjusted to the second position; and,
FIG. 12 is a bottom, front, cross-sectional isometric view, taken along plane 12-12 of FIG. 10, of the adjustable rod clamp of FIG. 1, adjusted to the second position.
All dash-dash broken lines in the drawings depict the environment of the claimed design and form no part of the claim. All dash-dot-dash broken lines in the drawings depict unclaimed boundaries of the claimed design. Features enclosed between boundary lines or combinations of boundary lines and solid lines are included in the claim.