TDSN 106 - Layout and Precision Measurement

2 Credit: (1 lecture, 1 lab, 0 clinical) 2 Contact Hours:

Topics in this course include metrology, precision measurement, and tolerance. Students examine the fits between mating parts, measuring instruments, gages, mechanical comparators, inspection of dimensions in layout, and CMM. Students are required to check manufactured parts against part prints with precision measuring devices.
OFFERED: fall and spring semesters

Course Goals/ Objectives/ Competencies:
Goal 1: Examine the science of metrology.

Define metrology.
Explain why measurement is relative.
Explain the importance of traceability.
Explain why measurement is similar to a language and essential for communication in industry.
State the relationships between measurements and statistics.

Goal 2: Demonstrate precision measurement.

Define a line measurement.
Compare precision, accuracy, and reliability.
Define tolerance as it applies to metrology.
Recognize various basic symbols used in geometric dimensioning and tolerancing.
Compare Maximum Material Condition (MMC) and Least Material Condition (LMC).
Know the distinction between rules and scales and understand their role.
Compare scale divisions and discrimination.
Read Vernier instruments.
Explain Abbe’s law.
Demonstrate the use of gage blocks.
Explain the role of calibration.
Compare direct measurement and comparison measurement.
State the importance of flatness to industry.
Explain the roles of squares and levels.
State the role of sine bars and plates.
Compare Coordinate Measuring Machine (CMM) with individual measuring instruments.