FIG. 1 is a front perspective view of our new design for a refractometer;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is right side elevation view thereof;
FIG. 4 is a back side elevation view thereof;
FIG. 5 is a front side elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom view thereof.