Since the spec is in in.lb you will need an in.lb torque wrench to measure that small amount. They make a 3/8" drive in.lb torque wrench, though the 1/4" drive in.lb torque wrench is much more common.

Then you will need the corresponding allen head drive sockets. This set contains both 1/4" and 3/8" drive sockets so you will need either this adaptor or that adaptor to mate some of the sockets to whatever size torque wrench you choose.