position and allows the syringe 11 to be used as a multiple repeat dose device the practitioner inserts the needle into the patient and depresses the plunger as the plunger is depressed the follower 280 interacts with the detents 1110 which provide for tactile feedback to the health care professional that the discrete intermediate dosage has been delivered the health care professional then moves the needle to a new injection site and repeats the process this process continues until the entire dose is delivered now turning to fig3 and fig1 the needle assembly 12 includes a needle cannula 56 located at the distal end of the hub 50 in the embodiment depicted in fig3 and 10 needle 56 is inserted into hub 50 defined at that distal end of needle assembly 12 in a manner known to those skilled in the art for example needle 56 may be secured using a friction fit snap fit suitable adhesive solvent weld or other now known or hereafter developed means of securing a needle to a hub sheath 80 is slidably engaged to hub 50 by ribs 53 54 in one embodiment rib 54 has detents which cooperate with detenting means 82 to lock sheath 80 in at least one of two or more positions in the intradermal embodiment of needle assembly 12 hub 50 includes a specifically designed skin engaging surface 57 which cooperates with needle 56 extending from.