4/23/2024 1:42:18 PM	MACH 53 Course Outline as of Fall 2007	Changed Course
CATALOG INFORMATION
Discipline and Nbr:  MACH 53	Title:  METROLOGY
Full Title:  Metrology
Last Reviewed:3/9/2020

Units		Course Hours per Week			Nbr of Weeks	Course Hours Total
Maximum	3.00	Lecture Scheduled	2.00		17.5 max.	Lecture Scheduled	35.00
Minimum	3.00	Lab Scheduled	2.00		17 min.	Lab Scheduled	35.00
		Contact DHR	1.00			Contact DHR	17.50
		Contact Total	5.00			Contact Total	87.50
		Non-contact DHR	0			Non-contact DHR Total	0

Total Out of Class Hours:  70.00

Total Student Learning Hours: 157.50

Title 5 Category:  AA Degree Applicable
Grading:  Grade Only
Repeatability:  00 - Two Repeats if Grade was D, F, NC, or NP
Also Listed As: 
Formerly: 

Catalog Description:

Metrology is the study of the science of precision weights, measurement, and inspection used in manufacturing. Students will become familiar with a ll types of handheld electronic and optical measuring devices. Visits to local industries utilizing CMM (Coordinate Measuring Machines) and related inspection devices are included. Print reading will be used as a vehicle to support GD&T (Geometric Dimensioning & Tolerancing) inspection standards. Class also includes study of ISO (International Standards Organ ization), SPC (Statistical Process Control), and ASME (American Society of Mechanical Engineers) inspection standards.

Prerequisites/Corequisites:
Completion of or concurrent enrollment in MACH 51A and MACH 80A and in IED 90A OR APTECH 90A.

Recommended Preparation:

Limits on Enrollment:

Schedule of Classes Information
Description:

Students will become familiar with all types of handheld measuring devices, electronic and optical. Visits to local industries utilizing CMM (Coordinate Measuring Machines) and related inspection devices are included.

(Grade Only)
Prerequisites:Completion of or concurrent enrollment in MACH 51A and MACH 80A and in IED 90A OR APTECH 90A.
Recommended:
Limits on Enrollment:
Transfer Credit:CSU;
Repeatability:00 - Two Repeats if Grade was D, F, NC, or NP

ARTICULATION, MAJOR, and CERTIFICATION INFORMATION

Associate Degree:		Effective:		Inactive:
Area:
CSU GE:	Transfer Area			Effective:	Inactive:
IGETC:	Transfer Area			Effective:	Inactive:
CSU Transfer:	Transferable	Effective:	Fall 2000	Inactive:	Summer 2012
UC Transfer:		Effective:		Inactive:
C-ID:

Certificate/Major Applicable: Certificate Applicable Course

COURSE CONTENT

Outcomes and Objectives:
At the conclusion of this course, the student should be able to:

Upon completion of this course, the student will be able to:

1. Interpret blueprints and GD&T (Geometric Dimensioning & Tolerancing)

symbols in order to verify dimensions of a machine part.

2. Calculate and convert machine part measurements using US and metric mea

sures.

3. Verify parts measurements on a drawing using a micrometer reading.

4. Measure a part using Vernier principles.

5. Determine the geometric profile of a machine part.

6. Interpret the measurement of a machine part from a radius, diameter, or

angle, relative to absolute, coordinate, and incremental systems.

7. Utilize the surface plates to measure angular units of perpendicularity

and parallelism with required accuracy in metric and US systems.

8. Describe the application and operation of Coordinate Measuring Machines

(CMM) and Non-Contact measuring tools.

Topics and Scope

I. Understanding Dimensions and Tolerances

 A. Gauging applications

 B. Measurement tools and calculations

   1. calipers

   2. micrometers.

II. Units of measurements system

 A. Converting metric to the US system

 B. Vernier scale principles

III. Blueprint Reading

 A. Interpreting GD&T (Geometric Dimensioning & Tolerancing) symbols

 B. Dimensions representations on drawings using symbols

 C. Calculations to describe degrees (angular units)

   1. degrees

   2. minutes

   3. seconds

 D. Using log tables

 E. Utilizing sine bars and optical comparators

IV. Cartesian Coordinates

 A. Coordinate and polar dimensions

 B. Incremental dimensions

 C. Absolute dimensions, relative to the number line system

V. Coordinate measuring machines (CMM)

 A. Types

   1. manual

   2. video

 B. Relationships to Vernier principles in decimal system

VI. Inspection Standards

 A. ISO (International Organization for Standardization)

 B. SPC (Standards of Professional Conduct)

 C. ASME (American Society of Mechanical Engineers)

 D. GD&T

Assignments:

Representative assignments:

1. Assigned reading, 20 - 25 pages per week.

2. Weekly quizzes on assigned readings.

3. Given a print, interpret symbols, dimensions, and features of

coordinate measurements made with metrology tools and features.

4. Evaluate symbols, dimensions, views, and notes on 10 - 12 drawings.

Answer questions related to evaluation.

5. Select and visit 4 sites using CMM practices, observing

methods of inspection (metric and U.S. systems) with CMM machines

and support measurement tools and gauges. Write a 2 page report on each

site and present to class.

6.  Given 10 parts, measure accuracy and consistency in relation to SPC

standards. Write a 2-3 page lab report.

7.  Measure assigned parts from prints to verify correct dimensions with

micrometers, calipers, and comparators and fill in blanks on a blueprint.

8. Performance exam: Given a part, measure and insert dimensions on a

blank print.

9. Oral report on a procedure for measuring a part (e.g., a gear).

10.Final exam.

Methods of Evaluation/Basis of Grade.

Writing: Assessment tools that demonstrate writing skill and/or require students to select, organize and explain ideas in writing.		Writing 10 - 20%
Site reports.
Problem solving: Assessment tools, other than exams, that demonstrate competence in computational or non-computational problem solving skills.		Problem Solving 15 - 20%
Lab reports, Evaluate drawings.
Skill Demonstrations: All skill-based and physical demonstrations used for assessment purposes including skill performance exams.		Skill Demonstrations 15 - 20%
Performance exams, Interpret dimensions on a drawing.
Exams: All forms of formal testing, other than skill performance exams.		Exams 35 - 45%
Multiple choice, True/false, Matching items, Completion
Other: Includes any assessment tools that do not logically fit into the above categories.		Other Category 10 - 15%
Attendance and oral report.

Representative Textbooks and Materials:

Dimensioning and Tolerancing, The American Society of Mechanical

Engineers, ASME Y14.5M-1998.

Print Reading for Engineering and Manufacturing Technology. Madsen, David.

Delmar, 2004.

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