Contents
Introduction to Metric
Background history on measurement
Background history on metrication in America
Increasing use of metric in America
Overview of the metric system UNITS OF MEASURE
Define base units and derived units
Selected base units and common prefixes: Length-meter (m,cm,mm), Mass-kilogram (kg, g)
Selected derived units and common prefixes: Temperature-degree Celsius (°C), Force-newton (N,kN,MN), Pressure/Stress-pascal (Pa, kPa, MPa)
Other units: Liquid volume-liter (L), Volume, Area
Reading and Writing Rules
Correct symbols: Proper case and correct symbols, Proper spelling. Proper spacing when combining prefix and unit, Proper spacing when adding unit to a number, Multiple prefixes disallowed, Use of periods and symbols, Singular vs. plural usage, Avoiding abbreviations
Correct numbers: Decimal markers, Use of exponents, Separation of digits
Limits, fits and Tolerances
Explanation of ISO system of fits and tolerances licensing and quantity
Definition of select terms used in ISO 286: Lower deviation, Upper deviation, Tolerance
How to read the tables
Limits of tolerances
Standard tolerances for ISO tolerance grades
Metric Conversion I
Explain the meaning of hard and soft metric conversion
Explain how significant digits affects conversion
Determine intended precision of a conversion
Using knowledge of circumstance
Using tolerance on a dimension
Metric Conversion II
Using conversion tables
Finding conversion factors
SI to inch/lb. to old metric
Making calculations
Perils of the calculator
Rules for rounding
Converting temperatures
Threaded fasteners
Properly describe and dimension metric fasteners
Use fastener specifications to properly dimension
Identify the nominal dimensions of metric fasteners
Recognize the major features of metric fasteners
Explain how tolerance position and grade determine class
Interpret fastener specifications on drawings
List major metric fastener standards
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