TTK #2 Measuring

1. TOPIC:TOPIC: MEASURINGMEASURING
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2. RULERSRULERS0 1 2 3 4 5 6 7 8 9 10 11 12
DO YOU REMEMBER HOW TO WORK WITHDO YOU REMEMBER HOW TO WORK WITH
FRACTIONSFRACTIONS ??
CAN YOU READ A SCALE TOCAN YOU READ A SCALE TO 1/32”1/32” ??

3. SCALESCALE

4. READ THE SCALEREAD THE SCALE
(HANDOUT SCALES)(HANDOUT SCALES)
INCHES - 1”, 2”, 3”.....INCHES - 1”, 2”, 3”..... (READ THE(READ THE
NUMBERS)NUMBERS)
CAN YOU FIND 1/2”CAN YOU FIND 1/2” ??
TWO 1/2” = 1”TWO 1/2” = 1” (2/2” = 1”)(2/2” = 1”)
THREE 1/2” = 1 1/2” .....THREE 1/2” = 1 1/2” ..... (3/2” = 1 1/2”)(3/2” = 1 1/2”)
CAN YOU FIND 1/4”CAN YOU FIND 1/4” ??
FOUR 1/4” = 1”FOUR 1/4” = 1” (4/4” = 1”)(4/4” = 1”)
TWO 1/4” = 1/2”TWO 1/4” = 1/2” (2/4” = 1/2”)(2/4” = 1/2”)

6. READ THE SCALEREAD THE SCALE
THREE 1/4” = 3/4”THREE 1/4” = 3/4”
FIVE 1/4” =FIVE 1/4” = ??

8. READ THE SCALEREAD THE SCALE
THREE 1/4” = 3/4”THREE 1/4” = 3/4”
FIVE 1/4” =FIVE 1/4” = 1 1/4”......1 1/4”...... (5/4” = 1 1/4”)(5/4” = 1 1/4”)

10. READ THE SCALEREAD THE SCALE
CAN YOU FIND FIND 1/8”CAN YOU FIND FIND 1/8” ??
HOW MANY 1/8” IN 1”HOW MANY 1/8” IN 1” ??
88 (8/8” = 1”)(8/8” = 1”)
HOW MANY 1/8” IN 1/2”HOW MANY 1/8” IN 1/2” ??
44 (4/8” = 1/2”)(4/8” = 1/2”)

12. READ THE SCALEREAD THE SCALE
SO FOUR 1/8”SO FOUR 1/8” OROR (4/8” = 1/2”)(4/8” = 1/2”)
HOW MANY 1/8” IN 3/4”HOW MANY 1/8” IN 3/4” ??
COUNT THEM!COUNT THEM!
OR 3/4 = 6/8 MATHEMATICALLYOR 3/4 = 6/8 MATHEMATICALLY
CAN YOU WORK WITH 1/16”CAN YOU WORK WITH 1/16” ??
HOW MANY 1/16” IN 1”HOW MANY 1/16” IN 1” ??
1616 OROR (16/16” = 1”)(16/16” = 1”)

14. METRIC MEASUREMETRIC MEASURE
WHAT ARE EACH OF THE NUMBERS WORTH?WHAT ARE EACH OF THE NUMBERS WORTH?
A CENTIMETERA CENTIMETER
CENTI MEANS 1/100, THEREFORE THERE ARECENTI MEANS 1/100, THEREFORE THERE ARE
1OO CENTIMETERS IN A METER.1OO CENTIMETERS IN A METER.
A METER IS APPROXIMATELY 39A METER IS APPROXIMATELY 39
INCHESINCHES(39.37”)(39.37”)
WE MEASURE MOSTLY WITH MILLIMETERS.WE MEASURE MOSTLY WITH MILLIMETERS.
MILLI MEANS 1/1000, THEREFORE THERE AREMILLI MEANS 1/1000, THEREFORE THERE ARE
1000 MILLIMETERS IN A METER.1000 MILLIMETERS IN A METER.

16. METRIC MEASUREMETRIC MEASURE
WHERE IS A MILLIMETER ON THE SCALEWHERE IS A MILLIMETER ON THE SCALE
HOW MANY MILLIMETERS ARE IN ONEHOW MANY MILLIMETERS ARE IN ONE
CENTIMETER?CENTIMETER?
1010

18. LET’S DO THE MATHLET’S DO THE MATH
CENTI = 1/100CENTI = 1/100
1/100 = .011/100 = .01
MILLI = 1/1000MILLI = 1/1000
1/1000 = .0011/1000 = .001
.01 ÷ .001 = 10.01 ÷ .001 = 10
CAN YOU SEE THIS ON THE SCALE?CAN YOU SEE THIS ON THE SCALE?

19. WHAT IS EACH NUMBER WORTHWHAT IS EACH NUMBER WORTH
IN MILLIMETERSIN MILLIMETERS
THERE ARE 10 MILLIMETERS IN ONETHERE ARE 10 MILLIMETERS IN ONE
CENTIMETER - RIGHT?CENTIMETER - RIGHT?
THEREFORE PUT A ZERO BEHIND EACHTHEREFORE PUT A ZERO BEHIND EACH
CENTIMETER NUMBER AND IT IS NOW INCENTIMETER NUMBER AND IT IS NOW IN
MILLIMETERS.MILLIMETERS.
ALMOST ALL METRIC MEASURE IN THEALMOST ALL METRIC MEASURE IN THE
AUTOMOTIVE FIELD IS IN MILLIMETERS.AUTOMOTIVE FIELD IS IN MILLIMETERS.

21. METRIC OR ENGLISHMETRIC OR ENGLISH
ARE YOU READY TO USE THIS RULE?ARE YOU READY TO USE THIS RULE?

22. READ THE SCALEREAD THE SCALE
USE THE RULE TO MEASURE THE LINESUSE THE RULE TO MEASURE THE LINES
(SEE YOUR LAB MANUAL PG. 4)(SEE YOUR LAB MANUAL PG. 4)
LETS CORRECT THEM AND I WILL HELPLETS CORRECT THEM AND I WILL HELP
YOU LATER IF YOU NEED IT.YOU LATER IF YOU NEED IT.

23. DECIMALS TO FRACTIONS ANDDECIMALS TO FRACTIONS AND
VISE VERSAVISE VERSA
1.000” = 1 INCH1.000” = 1 INCH
CUT THIS IN HALF AND YOU GET???CUT THIS IN HALF AND YOU GET???
0.500” = 1/2 INCH0.500” = 1/2 INCH
0.250” = 1/4 INCH0.250” = 1/4 INCH
0.125” = 1/8 INCH0.125” = 1/8 INCH
0.0625”= 1/16 INCH0.0625”= 1/16 INCH
0.03125” = 1/32 INCH0.03125” = 1/32 INCH
CAN YOU DO THIS IN YOUR HEAD?CAN YOU DO THIS IN YOUR HEAD?

24. DECIMALS TO FRACTIONSDECIMALS TO FRACTIONS
0.6250.625
READ THE FRACTIONREAD THE FRACTION
SIX HUNDRED ANDSIX HUNDRED AND
TWENTY FIVE THOUSANDSTWENTY FIVE THOUSANDS
WRITE THE FRACTION 625/1000WRITE THE FRACTION 625/1000
REDUCE 625/1000 =REDUCE 625/1000 = ??
5/85/8

25. FRACTIONS TO DECIMALSFRACTIONS TO DECIMALS
WRITE THE FRACTION.WRITE THE FRACTION.
1/2, 1/4, 1/8, 1/16, 1/32 .....1/2, 1/4, 1/8, 1/16, 1/32 .....
DIVIDE THE TOP BY THE BOTTOM.DIVIDE THE TOP BY THE BOTTOM.
1 ÷ 2 = .5001 ÷ 2 = .500
1 ÷ 4 = .2501 ÷ 4 = .250
1 ÷ 8 = .1251 ÷ 8 = .125
1 ÷ 16 = .06251 ÷ 16 = .0625
1 ÷ 32 = .031251 ÷ 32 = .03125

26. ENGLISH TO METRICENGLISH TO METRIC
AND VISE VERSAAND VISE VERSA
25.425.4 mm = 1 in.mm = 1 in.
CALCULATOR OR CHARTCALCULATOR OR CHART (HANDOUT)(HANDOUT)

27. CALIPERSCALIPERS (3 TYPES)(3 TYPES)
VERNIER CALIPERVERNIER CALIPER
VERNIER SCALE (NOT RECOMMENDED)VERNIER SCALE (NOT RECOMMENDED)
DIAL CALIPERDIAL CALIPER
DIAL SCALEDIAL SCALE (RECOMMENDED)(RECOMMENDED)
DIGITAL CALIPERDIGITAL CALIPER
DIGITAL SCALE ( USUALLY PRICEY BUTDIGITAL SCALE ( USUALLY PRICEY BUT
LOOK AT THELOOK AT THE
FEATURES)FEATURES)

29. VERNIER CALIPERVERNIER CALIPER

31. DIAL CALIPERSDIAL CALIPERS
LET’S SEE IF WE CAN READ A DIALLET’S SEE IF WE CAN READ A DIAL
CALIPER.CALIPER.
DOES THE SCALE LOOK FAMILIAR?DOES THE SCALE LOOK FAMILIAR?
WHAT IS DIFFERENT ABOUT IT?WHAT IS DIFFERENT ABOUT IT?
0” TO 1” = 1000/1000” OR 1.000”0” TO 1” = 1000/1000” OR 1.000”
HOW MANY LINES BETWEEN 0” AND 1”HOW MANY LINES BETWEEN 0” AND 1” ??
HOW MUCH ARE EACH OF THESE WORTHHOW MUCH ARE EACH OF THESE WORTH ??

32. DIAL CALIPERDIAL CALIPER

34. DIAL CALIPERSDIAL CALIPERS
MOVE THE SLIDE AND WATCH THE DIAL.MOVE THE SLIDE AND WATCH THE DIAL.
HOW MANY NUMBERS ARE ON THE DIALHOW MANY NUMBERS ARE ON THE DIAL ??
WHAT HAPPENS ON THE SCALE WHEN THEWHAT HAPPENS ON THE SCALE WHEN THE
DIAL MAKES A FULL REVOLUTIONDIAL MAKES A FULL REVOLUTION ??
CAN YOU READ THIS TOOL??CAN YOU READ THIS TOOL??
WE WILL PRACTICE SOON!WE WILL PRACTICE SOON!

36. DIGITAL CALIPER

37. CALIPERSCALIPERS
CAN YOU READ A VERNIER CALIPER?CAN YOU READ A VERNIER CALIPER?
CAN YOU READ A DIGITAL CALIPER?CAN YOU READ A DIGITAL CALIPER?

38. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
MEASURES ACCURATELY TO 1/1000 INCHMEASURES ACCURATELY TO 1/1000 INCH
(SPLIT YOUR HAIR THREE TIMES)(SPLIT YOUR HAIR THREE TIMES)
ESTIMATES TO 1/10,000 INCHESTIMATES TO 1/10,000 INCH
(SPLIT YOUR HAIR 30 TIMES)(SPLIT YOUR HAIR 30 TIMES)
IF CAN YOU COUNT TO 1000 YOU CAN USEIF CAN YOU COUNT TO 1000 YOU CAN USE
THIS INSTRUMENT.THIS INSTRUMENT. 0 1 2 3
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39. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
HOW MANY 1/2s ARE THERE IN ONE INCH?HOW MANY 1/2s ARE THERE IN ONE INCH?
HOW MANY 1/4s ARE THERE IN ONE INCH?HOW MANY 1/4s ARE THERE IN ONE INCH?
HOW MANY 1/8s ARE THERE IN ONE INCH?HOW MANY 1/8s ARE THERE IN ONE INCH?
HOW MANY 1/1000s ARE THERE IN ONE INCH?HOW MANY 1/1000s ARE THERE IN ONE INCH?

41. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
FROM” 0” TO “0” IS ONE INCH.FROM” 0” TO “0” IS ONE INCH.
HOW MANY 1/1000s IN ONE INCH?HOW MANY 1/1000s IN ONE INCH?
WHAT ARE THE NUMBERS WORTH?WHAT ARE THE NUMBERS WORTH?
DID YOU ANSWER - .100”DID YOU ANSWER - .100”
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43. 0 1 2 3 4 5 6 7 8 9 0
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HOW MANYHOW MANY SPACESSPACES DO YOU SEE BETWEENDO YOU SEE BETWEEN
EACH NUMBER ON THE BARREL?EACH NUMBER ON THE BARREL?
HOW MUCH IS EACH SPACE WORTH?HOW MUCH IS EACH SPACE WORTH?
DID YOU ANSWER - .025”DID YOU ANSWER - .025”
OUTSIDE MICROMETERSOUTSIDE MICROMETERS

45. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
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SET YOUR MIC ON .500”SET YOUR MIC ON .500”
HOW MANY NUMBERS ON THE THIMBLE PASS BYHOW MANY NUMBERS ON THE THIMBLE PASS BY
THE CENTERLINE WHEN YOU OPEN THE MIC ONETHE CENTERLINE WHEN YOU OPEN THE MIC ONE
REVOLUTIONREVOLUTION ??
WHAT HAPPENS ON THE BARREL WHEN YOU TURNWHAT HAPPENS ON THE BARREL WHEN YOU TURN
THE THIMBLE ONCETHE THIMBLE ONCE ??

46. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
DID YOU UNCOVER THE NEXT 25 MARK?DID YOU UNCOVER THE NEXT 25 MARK?
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48. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
CAN YOU READ THIS MIC?CAN YOU READ THIS MIC?
FIRST FIGURE THE MIC SIZE.FIRST FIGURE THE MIC SIZE. ?? .. ?? ?? ??
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49. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
0 1 2 3 4 5 6 7 8 9 0
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NOW READ THE FIRST DECIMAL PLACE
USING THE NUMBERS ON THE BARREL?
DID YOU GET - ?DID YOU GET - ? .. 33 ?? ??

50. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
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NOW READ THE REST OF THE NUMBER BYNOW READ THE REST OF THE NUMBER BY
ADDING THE THIMBLE TO THE 25 MARKS.ADDING THE THIMBLE TO THE 25 MARKS.

51. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
NOW READ THE REST OF THE NUMBER BYNOW READ THE REST OF THE NUMBER BY
ADDING THE THIMBLE TO THE 25 MARKS.ADDING THE THIMBLE TO THE 25 MARKS.
0 1 2 3 4 5 6 7 8 9 0
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25
+ 0
25
? . 3 2 5

53. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
?? ..33 55 00
?? ..55 88 77
?? .6.6 44 11
SET THE FOLLOWING ON A MIC.

54. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
?? ..11 22 99
?? ..00 66 99
SET THE FOLLOWING ON YOUR MIC.

56. SET THE FOLLOWING ON YOUR MIC.SET THE FOLLOWING ON YOUR MIC.
?? ..22 33 77 55
?? ..00 88 88 22
IS EVERYONE COMFORTABLE WITH THIS?IS EVERYONE COMFORTABLE WITH THIS?

57. OUTSIDE MICROMETERSOUTSIDE MICROMETERS
DO WE NEED MORE PRACTICEDO WE NEED MORE PRACTICE ??

58. OUTSIDE METRIC MICROMETERSOUTSIDE METRIC MICROMETERS
WHAT IS THE DIFFERENCEWHAT IS THE DIFFERENCE ??

64. INSIDE MICROMETERSINSIDE MICROMETERS
ENGLISHENGLISH ((AND METRIC)AND METRIC)

70. VERNIER MICROMETERVERNIER MICROMETER

73. TELESCOPING AND SMALL HOLETELESCOPING AND SMALL HOLE
GAUGESGAUGES

76. PLASTIC GAUGEPLASTIC GAUGE
PRECAUTIONSPRECAUTIONS
•CLEAN SURFACE
•NO ROTATION
•UNDER 100 DEG. F

77. PLASTIC GAUGEPLASTIC GAUGE

80. DIAL INDICATORSDIAL INDICATORS

83. DIAL BORE GAUGEDIAL BORE GAUGE

85. MIC TESTMIC TEST
((TUESDAYTUESDAY 2nd WEEK)2nd WEEK)
WILL YOU BE READY?WILL YOU BE READY?

86. MEASURING -MEASURING - HANDS ONHANDS ON
RULERSRULERS
CALIPERSCALIPERS
OUTSIDE MICROMETERSOUTSIDE MICROMETERS
INSIDE MICROMETERSINSIDE MICROMETERS
SMALL HOLE GAUGESSMALL HOLE GAUGES
TELESCOPING GAUGESTELESCOPING GAUGES
HOW ABOUT SOME PRACTICE WITHHOW ABOUT SOME PRACTICE WITH
SOME PARTSSOME PARTS ??

88. LET’S GO TO WORKLET’S GO TO WORK