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Millwright Level 1 > Measurement Tools > Flashcards

Measurement Tools Flashcards

1
Q

What are 4 steel rules and there uses?

A

Spring tempered-1/64 thick. Not to be bend. For accurate straight edge
Flexible- made of thin stock for curves
Narrow rule- for tight spaces
Hook rule- measuring from an edge

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2
Q

One complete revolution on a thimble is
What in inch ?
What in metric?

A

.025 inch per revolution

.5mm

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3
Q

What is an intrimik?

A

Measurement tool with 3 points of contact, self cantering with limited range .400 inch

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4
Q

6 inch steel rules can only measure up to?

For fraction, decimal, and metric

A

Fraction 1/64
Decimal 1/100 or .010
Metric .5mm

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5
Q

A vernier micrometer can measure up to?

A

.0001 inch or .002mm

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6
Q

Calipers are only dependable for measurements up to?

A

.001 inch

.02 mm

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7
Q

What are the 7 parts to a micrometer?

A 
Anvil
Spindle
Sleeve
Thimble
Ratchet
Locknut
Frame
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8
Q

What is a basic measurement?

A

Basic measurement measures to within 1/64 or .5mm

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9
Q

Universal bevel protractors can discriminate to?

Plate and bevel protractors can discriminate to?

A

5 minutes of a degree

1 degree

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10
Q

What are the 3 precision calipers?

A

Vernier
Dial
Electronic digital

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11
Q

4R on a steel rules allows measurement in?

A

8th 16th 32nd and 64th

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12
Q

Transfer measuring instrument include (3)

A

calipers
telescoping gauges
small hole gauges

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13
Q

What are the types of calipers?

A

spring calipers
firm joint calipers
lock joint transfer calipers

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14
Q

What tools are used to measure a precise outside caliper diameter?an inside caliper diameter?

A

inside micrometer

outside micrometer

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15
Q

What are telescoping gauges used for?

A

Measuring bores, slot and recesses.

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16
Q

Name the 3 types of small hole gauges

A

twin ball
hardened ball
half ball

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17
Q

Angle of drill point gauges are

A

59 and 118

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18
Q

What are the 2 dial reading styles

A

balanced and continuous

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19
Q

What are 3 types of dial indicators

A

Bottom plunger- have plunger located at the bottom of the dial
Test indicators-can be used in awkard and inaccessible situations. Can be swiveled or dovetailed
Back Plunger- plungermounted 90 degree dial face. Common for shaft alignment

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20
Q

What are 5 comparison measurement tools?

A 
squares
drill size gauges
drill point gauges
radius gauges
surface finish indicators
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21
Q

What is a dial bore gauge used for?

A

Used to measure various poisitions in the bore without making any adjustments.

22
Q

What is a crankshaft deflection gauge used for?

A

Used for checking bearing alignment or shaft deflection without dismantling the engine or compressor.

23
Q

The two (2) types of squares are?

A

solid square

combination square

24
Q

What are the type of errors that you might encounter when using dial indicators?

A

spindle travelcosine error

25
Q

What is spindle travel?

A

is when the spindle travels, the greater the distance there is to travel, the more errors can creep into an indicator reading

26
Q

What is cosine error?

A

Cosine error is when the axis of the linear measurement is not in line with the axis of measurementdeveloping an exaggerated measurement

27
Q

A vernier micrometer uses a scale of?

A

.0001 inch or .002mm

28
Q

Each vernier scale graduation on a 50 division metric vernier height gauge is equal to what part in mm?

A

.02mm

29
Q

What are the marking on a ruler called?

A

Graduations

30
Q

What are the two(2) types of tapes?

A 
short line(under 30 feet)
Long line (up to 50 feet)
31
Q

The most common unit used for angler measurements is?

A

degree

32
Q

Universal bevel protractors can discriminate to what degree?

A

5 minutes of a degree

33
Q

What are the two (2) ways to apply proper force to a micrometer?

A

ratchet stopthe feel method

34
Q

Thickness gauges are also called?

A

Feeler gauges

35
Q

The Distance of one revolution of a micrometer is?

A

.025 inch

.5mm

36
Q

On the micrometer spindle there are, how many threads per inch?

A

40 threads per inch

37
Q

Trammels are used when?

A

when you want to make a larger hole than the capacity of a scriber

38
Q

Imperial inch decimal graduations rules are in graduations of?

A

Tenth .1
Twentieth .05
Fiftieth .02
Hundredth .01

39
Q

Metric rules are graduated in?

A

Millimeters 1 mm

Half millimeter .5

40
Q

The accuracy of a caliper is

A

.001 or .02mm

41
Q

Standard micrometers can read to

A

.001 inch or .01mm

42
Q

Adjustable parallels are used to measure

A

Keyway, keyseats, slots

Coupling gap

43
Q

What are 2 materials for surface plates/layout tables?

A

Cast iron

Granite

44
Q

What are the 3 accuracies of surface plates?

A

Grade AA .0001 Laboratory
Grade A .0002 Inspection
Grade B .0004 Toolroom

45
Q

What is used to sharped a scriber, divider, caliper or trammel?

A

Oilstone

46
Q

What are 3 accessories for a combination square?

A

Center Head
Bevel Protractor
Square Head

47
Q

Surface Gauge vs Height gauge?

A

Surface gauge is for basic layout

Height gauge is used for precision layout up to .001 inch or .02 mm

48
Q

Angle of a center punch and prick punch?

A

Prick punch 30-60

Center punch 90

49
Q

What are the types of layout coatings?

A 
Layout die (bluing)
Copper suphate
Vermillion Powder and Shellac
Chalk
Lime and Alcohol
50
Q

A Datum edge is also a

A

Reference Point when laying out.

51
Q

Absolute dimension vs incremental

A

Absolute measuring gives measurements from Datum Edge

Incremental uses measurement from point to point

52
Q

How many graduations are in a vernier degree angle?

A

12 graduations adding to 60

Millwright Level 1 (17 decks)

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