How to read a scale cm Minor scale 1 4 3 2 5 Major scale Always record measurements to one decimal past the minor scale. You can read to the minor scale exactly, then you have to estimate the last decimal past it.

2.67 2.6 ? 1 4 3 2 cm 5

What’s the reading 4.12 1 4 3 2 cm 5

What’s the reading 1.73 1 4 3 2 cm 5

What’s the reading? 4.78 1 4 3 2 cm 5

How to record measurements 1 4 3 2 cm 5

Uncertainty cm 1 4 3 2 5 We can guarantee that the 4.7 is correct, But the last digit is estimated, So we are conservative with our statement by saying the uncertainty is One-half of the smallest division of markings (minor scale)

So how can we do better? Zoom in? 1 4 3 2 cm 5

So how can we do better? Smaller scale? 1 2 3 4 5 What if we make lots of new scale divisions?

Last One! 1 4 3 2 inches 5