The ornamental design for a base for high pressurelamp, as shown and described.
FIG. 1 is a front perspective view of an embodiment of a base for high pressure lamp.
FIG. 2 is a rear perspective view of the embodiment of FIG. 1.
FIG. 3 is a front planar view of the embodiment of FIG. 1.
FIG. 4 is a rear planar view of the embodiment of FIG. 1.
FIG. 5 is a right side planar view of the embodiment of FIG. 1.
FIG. 6 is a left side planar view of the embodiment of FIG. 1.
FIG. 7 is a top planar view of the embodiment of FIG. 1; and,
FIG. 8 is a bottom planar view of the embodiment of FIG. 1.
The broken lines in the drawings are for the purpose of illustrating portions of the base for high pressure lamp that form no part of the claimed design.