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Chapter 6: F. Measurement Conversions 55Note that the decimal equivalents to the fractions 1/3, 1/6, 1/7, and 1/9 areinfinitely repeating decimals, as shown below. A line drawn above a number or asequence of numbers indicates that the number or sequence repeats infinitely.1= 0333 .31= 01666 .61= 0.14285771= 0111 .9Part I.FConverting Decimals to FractionsTo convert a decimal to a fraction, divide the decimal by one. Then move the decimalpoint to the right in the numerator to make a whole number. Move the decimalplace in the denominator the same number of times. For example, to convert thedecimal 0.234 to a fraction, the decimal point in both the numerator and denominatoris moved four places to the right:0.0234 234=1 10,000The resulting fraction can then be simplified if desired.

Part IIMetrologyChapter 7Chapter 8Chapter 9Chapter 10Chapter 11Chapter 12Chapter 13A. Common Gages and MeasurementInstrumentsB. Special Gages and ApplicationsC. Gage Selection, Handling, and UseD. Surface Plate Tools and TechniquesE. Specialized Inspection EquipmentF. CalibrationG. Measurement System AnalysisPart IIMetrology is defined as the science of precision measurements. It has manyapplications in science and industry and employs a wide range of measuringinstruments. In the competitive manufacture of precision-engineered productswhere a high degree of quality is required it is particularly importantthat the proper measuring instruments be employed to provide accurate, reliable,and cost-effective inspection results. Thus, the selection of appropriatemeasuring and gauging instruments is becoming even more critical in theever-increasing necessity to stay competitive and due to customer demandfor higher-quality products.57

Part II

Metrology

Chapter 7

Chapter 8

Chapter 9

Chapter 10

Chapter 11

Chapter 12

Chapter 13

A. Common Gages and Measurement

Instruments

B. Special Gages and Applications

C. Gage Selection, Handling, and Use

D. Surface Plate Tools and Techniques

E. Specialized Inspection Equipment

F. Calibration

G. Measurement System Analysis

Part II

Metrology is defined as the science of precision measurements. It has many

applications in science and industry and employs a wide range of measuring

instruments. In the competitive manufacture of precision-engineered products

where a high degree of quality is required it is particularly important

that the proper measuring instruments be employed to provide accurate, reliable,

and cost-effective inspection results. Thus, the selection of appropriate

measuring and gauging instruments is becoming even more critical in the

ever-increasing necessity to stay competitive and due to customer demand

for higher-quality products.

57

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