Diploma in Engineering (commonly called Polytechnic Diploma) is a 3-year programme in India designed to build strong practical and applied engineering skills after Class 10. The curriculum blends core engineering basics (mathematics, applied science, engineering drawing) with branch-specific subjects such as Mechanical, Civil, Electrical, Electronics & Communication, Computer Engineering, or Automobile. Students spend significant time in laboratories, workshops, and project-based learning to understand tools, measurements, manufacturing/processes, circuits, surveying, programming, and maintenance practices depending on the branch. Most institutes include industrial visits, seminars, and an internship/industry training component, culminating in a final-year project. Graduates can work as technicians, junior engineers, supervisors, CAD operators, site engineers, and maintenance engineers in manufacturing, construction, utilities, IT support, telecom, and public sector projects. Many states also allow diploma holders to enter B.E./B.Tech directly in the second year through lateral entry schemes, making it a cost-effective route to an engineering degree.