Prepare parts sketches and write work orders and purchase requests to be furnished by outside contractors. -Draft detail drawing or sketch for drafting room completion or to request parts fabrication by machine, sheet or wood shops. -Review project instructions and blueprints to ascertain test specifications, procedures, and objectives, and test nature of technical problems, such as redesign. -Review project instructions and specifications to identify, modify and plan requirements fabrication, assembly and testing. -Devise, fabricate, and assemble new or modified mechanical components for products, such as industrial machinery or equipment, and measuring instruments. -Discuss changes in design, method of manufacture and assembly, and drafting techniques and procedures with staff and coordinate corrections. -Set up and conduct tests of complete units and components under operational conditions to investigate proposals for improving equipment performance. -Inspect li