FIG. 1 is a top, front, and right side perspective view of first embodiment of our new design for a refractometer in an open position;
FIG. 2 is a top, front, and right side perspective view thereof in a closed position;
FIG. 3 is a top plan view thereof in a closed position;
FIG. 4 is a bottom plan view thereof in a closed position;
FIG. 5 is a right side elevation view thereof in a closed position, the left side being a mirror image thereof;
FIG. 6 is a rear elevation view thereof in a closed position;
FIG. 7 is a front elevation view thereof in a closed position;
FIG. 8 is a top, front, and right side perspective view of a second embodiment of our new design for a refractometer in an open position;
FIG. 9 is a top, front, and right side perspective view thereof in a closed position;
FIG. 10 is a top plan view thereof in a closed position;
FIG. 11 is a bottom plan view thereof in a closed position;
FIG. 12 is a right side elevation view thereof in a closed position, the left side being a mirror image thereof;
FIG. 13 is a front elevation view thereof in a closed position;
FIG. 14 is a rear elevation view thereof in a closed position;
FIG. 15 is a top, front, and right side perspective view of a third embodiment of our new design for a refractometer in an open position;
FIG. 16 is a top, front, and right side perspective view thereof in a closed position;
FIG. 17 is a top plan view thereof in a closed position;
FIG. 18 is a bottom plan view thereof in a closed position;
FIG. 19 is a right side elevation view thereof in a closed position, the left side being a mirror image thereof;
FIG. 20 is a rear elevation view thereof in a closed position;
FIG. 21 is a front elevation view thereof in a closed position;
FIG. 22 is a top, front, and right side perspective view of a fourth embodiment of our new design for a refractometer in an open position;
FIG. 23 is a top, front, and right side perspective view thereof in a closed position;
FIG. 24 is a top plan view thereof in a closed position;
FIG. 25 is a bottom plan view thereof in a closed position;
FIG. 26 is a right side elevation view thereof in a closed position, the left side being a mirror image thereof;
FIG. 27 is a front elevation view thereof in a closed position; and,
FIG. 28 is a rear elevation view thereof in a closed position.