Presentation on theme: "LINEAR MEASUREMENT Allows for Mass Production"— Presentation transcript:
1 LINEAR MEASUREMENT Allows for Mass Production & for Interchangeable Parts
2 TYPES OF MEASUREMENT SYSTEMS Metric System: standard for linear measurement is the MeterEnglish System: linear measurement is divided into fractionsDecimal: linear measurement is divided into thousands of an inch
3 What is Linear Measurement? That which can be expressed as a length in fractional decimal or metric systemUsually in the form of a straight linePerimeter is a form of linear measurementIs pounds? Is gallons? Is electric current?
4 Measurement Terminology Actual Size: The measured size of a part.Basic Size: The size from which limits of size are derived.Limits of Size: The maximum and minimum permissible variation of a sizeTolerance: The total permissible variation of a size.Fit: The range of tightness between two mating parts.Clearance fit:: Provides clearance between mating parts
5 Terminology cont.Interference fit: provides interference between mating partsAllowance : Intentional difference between the material size limits of mating parts