To solve this problem, we need to read the Vernier calipers correctly. Here’s how:
1. Look at the main scale (the top ruler). Find the last full millimeter mark before the zero on the sliding part (Vernier scale).
2. Then look at the Vernier scale (the bottom sliding ruler) and find which line matches up exactly with a line on the main scale.
3. Add the two readings together.
The main scale is in centimeters (cm), and each small tick is 0.1 cm or 1 mm. The Vernier scale has 10 divisions that match 9 mm on the main scale — so each Vernier division is 0.9 mm. That means when one line lines up, it adds 0.01 cm for each step from zero.
Let’s go through each one:
a) Main scale: just past 0.2 cm → 0.2 cm
Vernier: 5th line matches → +0.05 cm
Total = 0.25 cm
b) Main scale: just past 0.6 cm → 0.6 cm
Vernier: 7th line matches → +0.07 cm
Total = 0.67 cm
c) Main scale: just past 1.0 cm → 1.0 cm
Vernier: 3rd line matches → +0.03 cm
Total = 1.03 cm
d) Main scale: just past 0.4 cm → 0.4 cm
Vernier: 8th line matches → +0.08 cm
Total = 0.48 cm
e) Main scale: just past 1.8 cm → 1.8 cm
Vernier: 2nd line matches → +0.02 cm
Total = 1.82 cm
f) Main scale: just past 1.9 cm → 1.9 cm
Vernier: 6th line matches → +0.06 cm
Total = 1.96 cm
g) Main scale: just past 1.3 cm → 1.3 cm
Vernier: 4th line matches → +0.04 cm
Total = 1.34 cm
h) Main scale: just past 5 mm = 0.5 cm
Vernier: 6th line matches → +0.06 cm
Total = 0.56 cm
i) Main scale: just past 6 mm = 0.6 cm
Vernier: 1st line matches → +0.01 cm
Total = 0.61 cm
j) Main scale: just past 9 mm = 0.9 cm
Vernier: 5th line matches → +0.05 cm
Total = 0.95 cm
Final Answer:
a) 0.25 cm
b) 0.67 cm
c) 1.03 cm
d) 0.48 cm
e) 1.82 cm
f) 1.96 cm
g) 1.34 cm
h) 0.56 cm
i) 0.61 cm
j) 0.95 cm
Parent Tip: Review the logic above to help your child master the concept of dial caliper worksheet.
