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First Year Millwright 2018 > Measuring Tools > Flashcards

Flashcards in Measuring Tools Deck (43)
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1

What measurements require which three (3) elements?

*the part
*the measuring device
* a standard (device to measure against)

2

The four (4) common rule types are?

*Spring Tempered rule
*Flexible rule
*Narrow Rule
*Hook rule

3

What are the types of precision calipers?

*Vernier caliper
*Dial caliper
*Electronic digital caliper

4

What are the parts of the vernier height gauge?

*base
*beam
*vernier slide
*scriber

5

What are the parts of a micrometer?

*spindle and timble
*anvil
*ratchet
*locknut or lever
*sleeve

6

What are the caliper's style?

*Spring caliper
*Firm joint calipers
*lock joint transfer calipers

7

What are three (3) styles of small hole gauges?

*twin ball
*hardened ball
*half ball

8

Dial indicators are available in?

continuous and balanced style

9

List three (3) types of dial indicators

*bottom plunger
*test indicators
*back or black plunger

10

The two (2) types of squares are?

*solid square
*combination square

11

Three (3) common style of graduations are?

*imperial (inch) fraction
*imperial (inch) decimal
*metric

12

The vernier scale of a universal bevel protractor has two scales, each with how many graduations?

12 graduations

13

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

*spindle travel
*cosine error

14

What is spindle travel?

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

15

What is cosine error?

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

16

A vernier micrometer uses a scale of?

.0001 inch or .002 mm

17

What do dial calipers used to move around the face of a dial?

a rack and pinion

18

Height gauges are used for what type of layout?

Precision layout

19

You should never use dial test indicators for?

Direct linear measurement

20

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

.02mm

21

What are the marking on a ruler called?

Graduations

22

What are the two(2) types of tapes?

*short line
*long line

23

What are the types of readings that a vernier caliper can perform?

*inside measurements
*outside measurements
*depths measurements

24

Plate protractors and bevel protractors measure angles to what degrees?

1° or one degree

25

Steel rules are usually?

6 inches

26

The most common unit used for angler measurements is?

degree

27

Universal bevel protractors can discriminate to what degree?

5 minutes of a degree

28

The imperial micrometer uses a screw thread with a pitch of?

.025 inch

29

Why is inside measurement more difficult to take than the outside measurements?

space is limited, and it can be difficult to align with the true diameter

30

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

*ratchet stop
and
*the feel method