1. Eng. Reem Mohanna

2. OBJECTIVES To be acquainting with different tools that may be used to obtain small-scale linear measurements (length, depth, diameter, thickness, etc.) To become familiar with vernier calipers.

3. Calipers Caliper is an instrument with two legs used for measuring linear dimensions. Calipers may be fixed, adjustable, or movable.

4. Caliper Parts

5. Types of Calipers Inside caliper Outside caliper Divider caliper Odd leg caliper Vernier Caliper Digital Caliper Dial Caliper Depth caliper

6. Inside caliper

7. Outside caliper

8. Divider caliper

9. Odd leg caliper

10. Vernier Caliper

11. Digital Caliper

12. Dial caliper

13. Depth caliper

14. Vernier Caliper Reading

15. Digital Caliper Reading

16. Dial Caliper Reading 5 mm + 0.11 mm = 5.11mm

17. Basic Statistics Average Standard Deviation 3/17/201617DOE Lecture 1

18. Results VernierDigitalDial Trial # 1 Trial # 2 Trial #3 Trial # 4 Trial #5 Average Standard Deviation

19. Results cont.

20. Questions 1. Describe the procedure of the experiment. 2. Determine class average and standard deviation for the caliper measurements. 3. What is the percentage of error and accuracy of each caliper? 4. Based on these dose one of the instruments consistently provide more repeatable results? 5. What are the sources of error in the dimensional measurement with caliper?