1 Direct materials. 2  Add the total cost of materials purchases in the period to the cost of beginning inventory, and subtract the cost of ending inventory. 3  The result is the cost of direct materials incurred during the period. 4  Direct labor.
Freebase(2.00 / 1 vote)Rate this definition: Nozzle. A nozzle is a device designed to control the direction or characteristics of a fluid flow as it exits an enclosed chamber or pipe. A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid.
1 The nozzle is the part of the airbrush where the needle rests. You may wish to use different needles depending on the project.  Your air source is what supplies the air pressure needed for the airbrush to properly spray. Most art projects will require an air source that can deliver 100 P.S.I. at a constant rate. Consult a professional to choose the proper air source for your project.