190101g Measuring Tools

Question 1

How much of the world uses System International (SI metric)

Answer 1

85% of the world trade

Question 2

What are the prefix units between Tera and pico?

Answer 2

Giga 1 000 000 000.
Mega 1 000 000.
Kilo 1 000.
Hecto 100.
Deca 10.
1.
Deci .1
Centi .01
Milli .001
Micro .000 001
Nano .000 000 001

Question 3

Name imperial and metric measurement terms of:

• Length
• area
• volume
• mass
• force (weight)
• velocity
• pressure
• energy
• heat
• temperature

Answer 3

• Length: inch, foot, yard, mile / millimeter, centimeter, meter, kilometer
• area: inch sq. foot sq. / meter sq. & centimeter sq.
• volume: cubic inch & cubic foot / centimeter cubed & meter cubed
• mass: slug / centigram & milligram
• force (weight): ounce & pound / Newton, gram & dram
• velocity: feet/sec & mile/hour / meter/sec & kilometer/hour
• pressure: pound sq. in & inches of mercury (psi, in Hg2) / pascals, atmospheric & barometric
• energy: foot-pound / joule
• heat: BTU / calories
• temperature: Fahrenheit / Celsius & kelvin

Question 4

Describe length

Answer 4

Length is the measurement between two points or extent of time.

Question 5

How manny feet and yards in a mile?
How manny feet in a yard?
How manny inches in a foot?
What are the common fractions of an inch that we use in the trade?

Answer 5

Feet 5280 & Yards 1760
3 feet
12 inches
1/2, 1/8, 1/16, 1/32, 1/64

Question 6

How manny hectometers(1000 meters) in a kilometer?
How manny decameters in a hectometer?
How manny meters in a decameter?
How manny decimeters in a meter?
How manny centimeters in a decimeter?
How manny millimeters in a centimeter?
How manny micrometer in a millimeter?
What are the common fractions of an inch that we use in the trade?

Answer 6

• 10 hectometers
• 10 decameters
• 10 meters
• 10 decimeters
• 10 centimeters
• 10 millimeters
• 1000 micrometers

Question 7

2 formulas you can use to calculate the area of a circle?

Answer 7

A = πr² 
A = .7854 * D²

Question 8

Describe volume?

Answer 8

The amount of space measured in three dimension.

Question 9

Definition of inertia?

Answer 9

If a object has mass, the object would want to stay put. Likewise, if it was moving, it would want to keep moving.

Question 10

Describe force?

Answer 10

First is best known as a push or pull.

Question 11

Define velocity?

Answer 11

Measurement of distance per (/) by time.

Question 12

Define pressure?

Answer 12

A force working in an area and opposing force.

Question 13

Define energy?

Answer 13

• Energy is a force or power, witch can change the motion, physical composition or temperature of an object. - Energy is the ability to do work.
• Energy can is transferable, but not lost or gained.

Question 14

Describe heat?

Answer 14

• Is a form of energy due to motion of molecules.

Question 15

Describe temperature?

Answer 15

• Measurement of the average velocity of the atoms or molecules.
• Fahrenheit or Celsius

Question 16

List 8 non-precision measuring tools.

Answer 16

• tape measure
• steel ruler
• protractor
• combination square
• feeler gauges
• straightedge
• steel squared
• level

Question 17

what’s a protactor used for?

Answer 17

to check angles

Question 18

what are the 4 uses of a combination square?

Answer 18

• checking 45 ad 90 degree angles
• checking lever
• measuring length with the steel ruler
• marking with a built-in scribe

Question 19

what are feeler gauges used for? how are they used?

Answer 19

used for measuring clearances between components. you most gain a feeling for the amount of tension required between surfaces.

Question 20

explain go-no-go feeler gauges.

Answer 20

one blade will read (for example) .004 and .006 and you are trying to achieve .005

Question 21

whats a straightedge used for? what are the proper procedure for checking?

Answer 21

to check flat surfaces for irregularities or warp.

• you check parallel and perpendicular on the flat surface, moving down every inch.
• you see a gap of light you check the thickness with a feeler gauge to see if the tolerance allows it.

Question 22

name 3 indirect measuring tools?

Answer 22

• common callipers
• small hole gauge
• telescopic gauge

Question 23

name 4 types of common callipers?

Answer 23

• spring callipers
• firm joint caliber
• lock joint calliper
• lock joint transfer calliper

Question 24

what is a small hole gauge set for? and what are they used with?

Answer 24

• measuring holes 1/8 to 1/2 on diameter.

- they are used with a micrometer or vernier calliper.

Question 25

what is a telescoping gauge set for?

Answer 25

• measuring inside diameters from 5/16” to 6”

- must be used with a micrometer

Question 26

what are 2 things you don’t want to do when using a telescoping set?

Answer 26

• don’t let the spring-loaded sliding rod snap

- only slide the tool from one side to the other once

Question 27

name 6 direct measuring instruments?

Answer 27

• standard outside micrometer
• vernier outside micrometer
• inside micrometer
• depth micrometer
• vernier callipers
• dial indicator

Question 28

how small can a standard micrometer measure? What are the 4 points to remember of a micrometer?

Answer 28

it can measure one thousandths of an inc.

• imperial micrometer contains 1000 units on it in one inch.
• there are 10 large divisions in each inch.
• there are 4 small divisions in each large division.
• one full rotation of the thimble equals to one small division.

Question 29

whats the range of inches you can measure with a micrometer if you change the anvil? how do you check the accuracy?

Answer 29

• 0 to 4 inches

- use micrometer measuring standards

Question 30

• vernier outside imperial micrometer can read up to?

Answer 30

ten thousands of an inch

Question 31

what is an inside imperial micrometer used for? what’s the minimum it can measure?

Answer 31

• inside measuring of diameter between 2 walls

- it can measure minimum 2”

Question 32

what could the vernier caliber be used for? to what accuracy? (imperial and metric)

Answer 32

to measure the outside, inside and depths.

.0001 and .02 mm

Question 33

what’s a dial indicator? and what’s it used for?

Answer 33

used to check alignment or movement in a component. from .001 of an inch to .1 (full rotation)