1. Chapter 6
Measuring

2. Objectives Perform measurements using tools in the chapter
Have a working understanding of the metric and English systems of measurement

3. Vernier Caliper Movable scale runs parallel to fixed scale
Can measure inside and outside diameter
Most will measure 0 to 7 inches in thousandths
Can measure depth

4. Vernier Caliper

5. Reading Vernier Caliper
Main scale is divided into inches
Each inch is divided into tenths (0.100")
Area between tenth measurement is divided into four segments, each .025"

6. Reading Vernier Caliper

7. Micrometers Precision measuring Consistent and accurate measurements
Adjusts to compensate for wear

8. Micrometers

9. Reading a Micrometer Metric or standard
Each rotation of thimble is equal to .025"
Four rotations will equal .100"
Each line on the thimble represents .001"
Some will measure to .0001"

10. Inside Micrometer
Measures cylinder bores and main or rod bearing bores
Extension rods to make them fit different size bores

11. Inside Micrometer

12. Telescoping Gauge Transfer gauge
Different sizes to measure all sizes of bores
Ends of tool telescope is out to make contact with bore
After lock is set
Tool removed from bore and measured with micrometer

13. Telescoping Gauge

14. Dial Indicators Measure movements such as back lash and end play
Also used to measure wear, taper, and out-of-round

15. Dial Indicators