Handheld surgical depth instrument with rectangular body

FIG. 1 is an orthogonal view of a handheld surgical depth instrument with rectangular body;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof, the left side being a mirror image;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a frontal view thereof.

The outer most broken lines immediately adjacent to the shaded areas represent the bounds of the claimed design while all other broken lines are directed to environment, and are for illustrative purposes only; the broken lines form no part of the claimed design. The wire frame lines in FIGS. 2-6 are intended to indicate surface contour and are not intended to be surface ornamentation.