SRJC Course Outlines

6/24/2024 6:54:06 AMMACH 53 Course Outline as of Fall 2004

Changed Course

Discipline and Nbr:  MACH 53Title:  METROLOGY  
Full Title:  Metrology
Last Reviewed:3/9/2020

UnitsCourse Hours per Week Nbr of WeeksCourse Hours Total
Maximum4.00Lecture Scheduled3.0017.5 max.Lecture Scheduled52.50
Minimum4.00Lab Scheduled3.0017.5 min.Lab Scheduled52.50
 Contact DHR1.00 Contact DHR17.50
 Contact Total7.00 Contact Total122.50
 Non-contact DHR0 Non-contact DHR Total0

 Total Out of Class Hours:  105.00Total Student Learning Hours: 227.50 

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

Catalog Description:
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Metrology is the study of the science of precision weights, measurement, and inspection used in industry manufacturing. 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. Print reading will be used as a vehicle to support GD&T (Geometric & Dimensioning) inspection standards. Class also includes study of ISO (International Standards Organization), SPC (Statistical Process Control), and ASME (American Society of Mechanical Engineers) inspection standards.

Completion of or concurrent enrollment in MACH 51 and MACH 80A AND IED 90A OR APTECH 90A.

Recommended Preparation:

Limits on Enrollment:

Schedule of Classes Information
Description: Untitled document
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 51 and MACH 80A AND IED 90A OR APTECH 90A.
Limits on Enrollment:
Transfer Credit:CSU;
Repeatability:00 - Two Repeats if Grade was D, F, NC, or NP


Associate Degree:Effective:Inactive:
CSU GE:Transfer Area Effective:Inactive:
IGETC:Transfer Area Effective:Inactive:
CSU Transfer:TransferableEffective:Fall 2000Inactive:Summer 2012
UC Transfer:Effective:Inactive:

Certificate/Major Applicable: Certificate Applicable Course


Outcomes and Objectives:
At the conclusion of this course, the student should be able to:
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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 English and
metric measures.
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 and
perpendicularity parallelism with required accuracy in metric and
U.S. systems.
8. Describe the application and operation of Coordinate Measuring Machines
(CMM) and Non-Contact measuring tools.

Topics and Scope
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I. Dimensioning and Tolerancing
 A. Gauging applications
 B. Measurement tools and calculations
   1. calipers
   2. micrometers.
II. Units of measurements system
 A. Converting International (S.I. Metric) to the English 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 principles
 A. Coordinate and polar dimensions
 B. Incremental dimensions
 C. Absolute dimensions, relative to the number line system
V. Coordinate measuring machines (C.M.M.)
 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

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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 C.M.M. practices, observing
methods of inspection (metric and U.S. systems) with C.M.M. machines
and support measurement tools and gages. 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:
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Dimensioning and Tolerancing, The American Society of Mechanical
Engineers, ASME Y14.5M-1998.
Print Reading for the Machine Trades, 2nd ed. Pouler, Wilfred. Delmar,
Print Reading for Engineering and Manufacturing Technology. Madsen, David.
Delmar, 2004.

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