US D274257 S
Abstract available in
FIG. 1 is a front elevation of a precision bore fused silica tubing with tapered section, showing our new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a top plan view thereof; and
FIG. 4 is a longitudinal cross-section taken on line 4--4 of FIG. 3.