I have been a Technical Instructor for the Royal Australian Navy for 13 years and then a TAFE Teacher for 19 years in the Manufacturing Industry. I developed the former NSW course 18127 and HSC Trial Exams for 2012 and 2013. Each resource has been developed to incorporate Australian Training Elements and Performance Criteria, Required Skills and Knowledge. All books include Tutorial and Skill Practice Exercises. Teachers can allow the students to work through the book at their leisure, mark/asses their work, and issue a pass if competent or sit for a competency test.