190101g Measuring Tools Flashcards
How much of the world uses System International (SI metric)
85% of the world trade
What are the prefix units between Tera and pico?
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
Name imperial and metric measurement terms of:
- Length
- area
- volume
- mass
- force (weight)
- velocity
- pressure
- energy
- heat
- temperature
- 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
Describe length
Length is the measurement between two points or extent of time.
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?
Feet 5280 & Yards 1760
3 feet
12 inches
1/2, 1/8, 1/16, 1/32, 1/64
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?
- 10 hectometers
- 10 decameters
- 10 meters
- 10 decimeters
- 10 centimeters
- 10 millimeters
- 1000 micrometers
2 formulas you can use to calculate the area of a circle?
A = πr² A = .7854 * D²
Describe volume?
The amount of space measured in three dimension.
Definition of inertia?
If a object has mass, the object would want to stay put. Likewise, if it was moving, it would want to keep moving.
Describe force?
First is best known as a push or pull.
Define velocity?
Measurement of distance per (/) by time.
Define pressure?
A force working in an area and opposing force.
Define energy?
- 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.
Describe heat?
- Is a form of energy due to motion of molecules.
Describe temperature?
- Measurement of the average velocity of the atoms or molecules.
- Fahrenheit or Celsius
List 8 non-precision measuring tools.
- tape measure
- steel ruler
- protractor
- combination square
- feeler gauges
- straightedge
- steel squared
- level
what’s a protactor used for?
to check angles
what are the 4 uses of a combination square?
- checking 45 ad 90 degree angles
- checking lever
- measuring length with the steel ruler
- marking with a built-in scribe
what are feeler gauges used for? how are they used?
used for measuring clearances between components. you most gain a feeling for the amount of tension required between surfaces.
explain go-no-go feeler gauges.
one blade will read (for example) .004 and .006 and you are trying to achieve .005
whats a straightedge used for? what are the proper procedure for checking?
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.
name 3 indirect measuring tools?
- common callipers
- small hole gauge
- telescopic gauge
name 4 types of common callipers?
- spring callipers
- firm joint caliber
- lock joint calliper
- lock joint transfer calliper
what is a small hole gauge set for? and what are they used with?
- measuring holes 1/8 to 1/2 on diameter.
- they are used with a micrometer or vernier calliper.
