US D252861 S
FIG. 1 is a left front perspective view of a base for a pH meter electrode arm showing my new design;
FIG. 2 is a top plan view thereof, the bottom being substantially flat, plain, and unornamented;
FIG. 3 is a right side elevational view of FIG. 2;
FIG. 4 is a front elevational view thereof, with the rear elevational view being a mirror image.