ModernModern AutomotiveAutomotive TechnologyTechnology ChapterChapter 66

AutomotiveAutomotive MeasurementMeasurement andand MathMath ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath z Describe standard and metric measuring systems z Identify basic measuring tools z Describe how to use basic measuring tools z List safety rules for measuring tools z Summarize basic math facts ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

1. A TORQUETORQUE WRENCHWRENCH is used to apply a specific amount of turning force to a fastener.

2. A VACUUMVACUUM GAUGEGAUGE is commonly used to measure negative pressure or suction. TorqueTorque WrenchWrench TheoryTheory

One foot-pound equals one pound of pull on a one-foot-long lever arm FlexFlex BarBar TorqueTorque WrenchWrench

Uses a bending metal beam to make the pointer read torque on the scale DialDial IndicatorIndicator TorqueTorque WrenchWrench

Very accurate type of torque wrench RatchetingRatcheting TorqueTorque WrenchWrench

Torque value is set by turning the handle– fastener is tightened until it clicks VacuumVacuum TestTest

Connect a vacuum gauge to the inlet - the negative pressure side of the pump ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

3. A MICROMETERMICROMETER can easily measure to one ten-thousandth of an inch.

4. A FEELERFEELER GAUGEGAUGE is used to measure small clearances or gaps between parts. ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath Anvil Measuring Faces Barrel

Spindle

Thimble

Frame PartsParts ofof aa MicrometerMicrometer ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

Each Blade of a Feeler Gauge is in .001 Increments ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

5. A DIALDIAL INDICATORINDICATOR is used to measure part movement in thousandths of an inch.

6. The CONVENTIONALCONVENTIONAL MEASURINGMEASURING SYSTEMSYSTEM originated from sizes taken from the parts of the human body. ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

Dial Indicator Measures In .001 Increments CustomaryCustomary MeasuringMeasuring SystemSystem

Originated from sizes taken from parts of the human body ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

7. A VERNIERVERNIER CALIBERCALIBER can make inside, outside, and at times, depth measurements with considerable accuracy.

8. The DECIMALDECIMAL CONVERSIONCONVERSION CHARTCHART is used to interchange and find equal values for fractions, decimals, and millimeters. ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

Vernier Calibers: Can Measure Outside, Inside and Depth Measurements DecimalDecimal ConversionConversion ChartChart ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

9. The METRICMETRIC SYSTEMSYSTEM OFOF MEASURMENTMEASURMENT uses a power of 10 for all basic units.

10. An OUTSIDEOUTSIDE CALIBERCALIBER can be used when making external measurements where 1/64" is sufficient. CustomaryCustomary andand MetricMetric ValuesValues ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath

A. Dividers B. Outside Calibers C. Inside Calibers ChapterChapter 66 AutomotiveAutomotive MeasurementMeasurement andand MathMath z Describe standard and metric measuring systems z Identify basic measuring tools z Describe how to use basic measuring tools z List safety rules for measuring tools z Summarize basic math facts