However, the book’s presentation sometimes reflects its era: earlier editions focus heavily on manual drafting techniques (T-square, drawing board, compasses) and instrument practice. While these remain valuable for foundational understanding, modern engineering workflows increasingly rely on CAD software. Later editions or supplementary materials may address CAD basics, but instructors and students often need to pair Natarajan’s manual drafting emphasis with hands-on CAD training to stay aligned with contemporary industry practice. Another minor limitation is that advanced topics like GD&T (Geometric Dimensioning and Tolerancing), advanced 3D modeling principles, and modern drafting standards may not be covered in depth, requiring additional references for specialized or advanced courses.