Original Power Point Created by Scott Sommerlatte Modified by Georgia Agricultural Education Curriculum Office May 2007

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 dial 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

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

thimblesleeve anvil spindle frame

1.Frame 2.Thimble 3.Sleeve 4.Spindle 5.Anvil

Smallest Measurement Largest sleeve reading One mark past largest sleeve reading Thimble Reading inches

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 : 1. 2.

3. What are the three things calipers are used to measure? 4. Why do we use measuring tools?

Name this tool: 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