Jet-Bow Beam Combination Drawing Set - 6" speed compass with inter-changeable pen, pencil and divider parts, replaceable needle points 4½" bow compass with inter-changeable pen, pencil, and divider parts 6" beam bar and slide coupling for circles up to 28" in diameter 6" friction divider with self centering gear head and replaceable needle points Mechanical lead holder Slip handle for spare ruling pen Lead pointer, center tack and screw driver Packaged in see-through, hard plastic case