Technical Drawing: Board Practice & Isometric Projection 📐

### Engineers don’t just talk — they draw! 🏗️ Technical drawing is the graphical language used by architects, builders, and engineers all over Nigeria and the globe! Core Drafting Equipment: * **Drawing Board & Tee-Square**: The Tee-square head slides along the board's left working edge to draw razor-sharp **horizontal parallel lines**. * **Set-Squares ($30^\circ/60^\circ$ and $45^\circ$)**: Rest on the Tee-square blade to draw vertical lines ($90^\circ$) and angles. * **Pencils**: $2H$ for faint construction lines; $HB$ or $H$ for bold outlines. **Isometric Drawing**: * In Isometric projection, the object is tilted so three faces are visible. * The two horizontal receding axes are drawn at **$30^\circ$ to the horizontal base line**! * True scale measurements are marked along all three isometric axes ($X, Y, Z$)!