Transcript •Why do we use measuring tools? •What tools will we use? •How do we read measuring tools? •Where are these tools used in.

•Why do we use measuring tools?
•What tools will we use?
•How do we read measuring tools?
•Where are these tools used in industry?
•Make measurements with rulers, calipers,
and micrometers
•Complete a worksheet on measuring tools
•Measuring “jigs” before starting a job
•While working on a job
•To check dimensions after completing a job
•Least Precise
•Accuracy of 1/16” (.0625”)
•Used on large items and “non-precision” work
•Available in various lengths
•Divided into increments of 1/16”(standard)
*sometimes smaller
•Metric on the opposite side
•Bold numbers indicate inches
•Accuracy of .001”
•0” – 6” , 0” – 12” , 0” – 36”
•Used on precision jobs
•Measures Outside Diameters, Inside Diameters,
And Depths
1.Dial
2.Jaws
3.Nibs
4.Bar
5.Clamp Screw
•Each increment on the bar represents .100”
•Each round on the dial equals .100” or .200”
Depending on the brand of the tool
•Bold numbers on the dial represent .010”
•Small dashes equal .001”
•Most accurate
•Accuracy of .0001”
•Available in various sizes, from 0” – 1” up to 35” – 36”
•Used to measure Outside Diameters
sleeve
spindle
anvil
frame
thimble
1.Frame
2.Thimble
3.Sleeve
4.Spindle
5.Anvil
Smallest Measurement Largest sleeve reading
19
18
0 1 2 3 4 5 17
6789
16
15
0.000
0.300
0.025
0.016
14
13
0123
0.341 inchesOne mark past
largest sleeve
reading
Thimble Reading
15
18
17
16
14
13
15
•Serves the same purposes as conventional
Calipers and micrometers
•Easier to read due to digital read-out
•Usually more expensive
Get out a sheet of paper . . .
•Name the following tools :
2.
1.
3.
4.
5. What tool is the most accurate?
6. What tool is the least accurate?
7. What are the three things calipers are
used to measure?
8. Why do we use measuring tools?
•Name this tool:
9.
10.What is one job that uses measuring
tools that we discussed?
•Name the 5 parts of the calipers .
1 point each
•Name the 5 parts of the micrometer .
1 point each