The ornamental design for a pvscale, as shown and described.
FIG. 1 is a perspective view of a PV scale showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a left elevational view thereof;
FIG. 5 is a right elevational view thereof;
FIG. 6 is a front elevational view thereof;
FIG. 7 is a back elevational view thereof;
FIG. 8 is a perspective view of a PV scale with the cover on;
FIG. 9 is a perspective view of a PV scale with the cover off; and,
FIG. 10 is a perspective view of a PV scale with the cover used as an expansion tray.
The broken line showing of structural features is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design.