Break lines and arrowheads
Metal Technology · Grade 10 · about 40 minutes
Wavy or zig-zag break lines shorten a long bar on the sheet; arrowheads mark the ends of a dimension.
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- 6 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Scales and conventions
- Thick continuous outlines
- Thin continuous lines
- Dashed hidden edges
- Chain centre lines
- Break lines and arrowheads
- Dimensioning conventions
- Diameter, radius and thickness
- Common drawing abbreviations
- The title block
- What scale means
- Reduction and enlargement
- Constructing a plane scale
- Constructing a diagonal scale
- Why drawing standards matter