A powder delivery nozzle, for a laser cladding delivery head, includes inner and outer sleeves. dynamic solution viscosity at 25\xb0 C. A final value is determined for each raw value and can be calculated by use of a non-linear image processing algorithm. Additionally, a caged ball sub is coupled to the ported sub. A proximal end of the bilge surface engaging member is releasably connectable in a first use mode to the upright support member.