FIG. 1 is a perspective view of a sphygmomanometer showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side view thereof; and,

FIG. 8 is a perspective view thereof, in use condition; the broken line showing of the hand and arm is for illustrative purposes only and forms no part of the claimed design.