Scale reading practice test
20 mixed questions from every scale reading lesson. Pick your units, then work through them.
The blue line is laid on the 3/8 edge of an architect's scale. How long is it at 3/8" = 1'-0"?
What this test covers
Each question comes from one of these lessons. If a topic trips you up, go back to that lesson for more practice.
- How drawing scales work: Turn a length measured on the sheet into the real length, in feet and inches or in millimetres.
- How to read an architect's scale: Whole feet on one side of zero, inches in the subdivided foot on the other.
- How to read a metric scale rule: 1:50, 1:100 and 1:200 edges, read in metres from zero.
- Find the scale of a drawing: Work out the scale from one dimensioned line when the scale note is missing.
- Written dimensions, NTS and reduced prints: When to trust the number over your scale, what NTS means, and half-size prints.
- Work out real lengths: No answers to pick from: read the rule or do the scale sum and type the real length.
Explained in our own words and checked against trade school textbooks. Metric scales follow the ISO 5455 series.