Polytechnic Technical Drawing Practicals
Learn Polytechnic technical drawing step by step with interactive geometric constructions, projections, dimensioning, engineering diagrams and drawing-board demonstrations.
Interactive experiments
- Bisecting a line — Technical Drawing
- A perpendicular from a given point to a line — Technical Drawing
- A line divided into proportional parts — Technical Drawing
- A perpendicular from any point to a line — Technical Drawing
- Parallel lines — Technical Drawing
- Bisecting an angle — Technical Drawing
- Various angles constructed without a protractor — Technical Drawing
- A copied angle — Technical Drawing
- The centre of a given arc or circle — Technical Drawing
- Various geometrical shapes — Technical Drawing
- Straight lines joined to curves by an arc — Technical Drawing
- An ellipse and scales — Technical Drawing
- First angle orthographic projection — Technical Drawing
- Isometric drawing — Technical Drawing
- Bars — Technical Drawing
- Tubes — Technical Drawing
- Shafts — Technical Drawing
- Compression springs — Technical Drawing
- Tension springs — Technical Drawing
- Splined shafts (external) — Technical Drawing
- Splined shafts (internal) — Technical Drawing
- Serrated shafts (external) — Technical Drawing
- Serrated shafts (internal) — Technical Drawing
- Functional dimensioning — Technical Drawing
- Non-functional dimensioning — Technical Drawing
- Auxiliary dimensioning — Technical Drawing
- Chain dimensioning — Technical Drawing
- Datum dimensioning — Technical Drawing
- Types of line — Technical Drawing
- Freehand letters and numerals — Technical Drawing
- Bold lettering for title blocks — Technical Drawing
- Basic assembly drawings — Technical Drawing
- Exploded diagrams — Technical Drawing
- Orthographic from a pictorial drawing — Technical Drawing
- Third angle projection — Technical Drawing
- Freehand sketches in first angle — Technical Drawing
- Isometric circles — Technical Drawing
- Isometric ellipses — Technical Drawing
- The isometric scale — Technical Drawing
- Sectioned diagrams in first angle — Technical Drawing
- Hydraulic power steering — Technical Drawing
- Hydraulic power brakes — Technical Drawing
- Hydraulic tipping mechanisms — Technical Drawing
- Heavy vehicle air brakes — Technical Drawing
- Basic auto-electrical circuits — Technical Drawing