Let's solve each of the
metric micrometer reading exercises step by step.
A
metric micrometer measures in millimeters (mm), and the reading is determined by combining:
1.
Main scale (sleeve) reading: The number on the main scale visible before the thimble.
2.
Thimble (rotating scale) reading: The number on the thimble that lines up with the reference line.
3.
Additional 0.01 mm increments: Each small division on the thimble represents 0.01 mm.
---
🔧 General Rule:
- Main scale reading = whole millimeter value
- Thimble reading = number of divisions × 0.01 mm
- Total = Main scale + Thimble reading
We'll go through each one:
---
1
- Main scale: 10 mm
- Thimble: 25 (since it's aligned with the 25 mark)
- Reading: 10 + 0.25 =
10.25 mm
✔ Answer: 10.25 mm
---
2
- Main scale: 20 mm
- Thimble: 47 (aligned with 47)
- Reading: 20 + 0.47 =
20.47 mm
✔ Answer: 20.47 mm
---
3
- Main scale: 0 mm (just past zero, but not yet at 1)
- Thimble: 36 (aligned with 36)
- Reading: 0 + 0.36 =
0.36 mm
✔ Answer: 0.36 mm
---
4
- Main scale: 0 mm
- Thimble: 5 (aligned with 5)
- Reading: 0 + 0.05 =
0.05 mm
✔ Answer: 0.05 mm
---
5
- Main scale: 0 mm
- Thimble: 27 (aligned with 27)
- Reading: 0 + 0.27 =
0.27 mm
✔ Answer: 0.27 mm
---
6
- Main scale: 5 mm
- Thimble: 30 (aligned with 30)
- Reading: 5 + 0.30 =
5.30 mm
✔ Answer: 5.30 mm
---
7
- Main scale: 15 mm
- Thimble: 10 (aligned with 10)
- Reading: 15 + 0.10 =
15.10 mm
✔ Answer: 15.10 mm
---
8
- Main scale: 0 mm
- Thimble: 39 (aligned with 39)
- Reading: 0 + 0.39 =
0.39 mm
✔ Answer: 0.39 mm
---
9
- Main scale: 20 mm
- Thimble: 20 (aligned with 20)
- Reading: 20 + 0.20 =
20.20 mm
✔ Answer: 20.20 mm
---
10
- Main scale: 5 mm
- Thimble: 15 (aligned with 15)
- Reading: 5 + 0.15 =
5.15 mm
✔ Answer: 5.15 mm
---
✔ Final Answers:
| # | Reading (mm) |
|---|--------------|
| 1 | 10.25 |
| 2 | 20.47 |
| 3 | 0.36 |
| 4 | 0.05 |
| 5 | 0.27 |
| 6 | 5.30 |
| 7 | 15.10 |
| 8 | 0.39 |
| 9 | 20.20 |
| 10| 5.15 |
---
📌
Tips for Micrometer Reading:
- Always read the
main scale first (the fixed sleeve).
- Then read the
thimble scale (rotating part) where it aligns with the reference line.
- Each division on the thimble is
0.01 mm.
- If the thimble has a
vernier scale, it may allow for even more precision, but these appear to be standard metric micrometers.
Let me know if you'd like a visual explanation or want to practice more!
Parent Tip: Review the logic above to help your child master the concept of micrometer reading worksheet.
