1. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Precision Measurement Tools Dial Caliper Steel Rule Micrometer

2. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Dial Caliper A dial caliper is a precision measuring device that can measure in thousandths of an inch. The dial caliper functions as an: Outside caliper Inside caliper Depth gauge

3. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Outside caliper Using the dial caliper as an outside caliper

4. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Using the dial caliper as an outside caliper

5. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Inside caliper Using the dial caliper as an inside caliper

6. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Using the dial caliper as an inside caliper

7. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Depth gauge Using the dial caliper as a depth gauge

8. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Using the dial caliper as a depth gauge

9. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Resetting the dial caliper to zero Begin by gently closing the calipers. Do not over tighten, close the jaws until they are touching Gently turn the glass dial until the indicator reads zero. Step 1 Step 2 Note the indicator is not on zero

10. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Measuring with a dial caliper What is the reading on the dial caliper at the left? ?

11. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Measuring with a dial caliper 1.000 One inch

12. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. 1.000.300 One inch three hundred Measuring with a dial caliper

13. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. 1.000.300 +.050 One inch three hundred fifty thousands Measuring with a dial caliper 1.350

14. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Measuring with a dial caliper 1.000 One inch

15. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Measuring with a dial caliper 1.000.800 One inch eight hundred

16. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Measuring with a dial caliper 1.000.800 +.075 1.875 One inch eight hundred seventy five thousands

17. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. What is the reading on this caliper? Nine hundred and ninety thousands

18. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. What is the reading on this caliper? Two inch two hundred and sixty thousands

19. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. What is the reading on this caliper? Four inch one hundred twenty five thousands

20. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Micrometer The thimble consists of a graduated scale that reads from 0-9. There are four marks between each number. Each mark signifies.025 (twenty five thousands).

21. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Micrometer - sleeve The sleeve has a graduated scale that runs from 0-20 with 10 marks in between.

22. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Reading the Micrometer There are four marks on the thimble. 4*.025 =.100 Zero marks on the sleeve. The micrometer reads.100 of an inch

23. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Reading the Micrometer Two numbers on the thimble.200 There are almost three lines after the last whole number 2*.025 =.050 21 on the sleeve..271 or two hundred seventy one thousands

24. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Steel rules

25. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Steel Rules The top rule measures in fractional values The bottom rule measures in decimal values

26. Vex 1.0 © 2005 Carnegie Mellon Robotics Academy Inc. Complete the precision measurement worksheet