CHAPTER 5

MEASURING

SYSTEM AND

MEASURING

TOOLS

MEASURING

SYSTEMMETRIC

SYSTEMUNITED STATES

CUSTOMARY

SYSTEM

METRIC

SYSTEMA decimal system of

weights and

measures based on

the meter and on the

kilogram

Meter Length

Grams Mass or Weight

Liter Volume

UNITED STATES

CUSTOMARY

SYSTEM

Yard or Inch Length

Pounds Weight

Feet Height

The main system of

weights

and measures used in the

United States and a few ot

her countries.

Metric System

United sates

Customary

System

USC to USC 1 Foot = 12 inchesin-ft. /12

Metric to Metric 1 meter = 10 decimetercm-mm *10

USC to Metric 1 inch = 2.54 1 foot = 30.48

Metric to USC 1 Meter = 3.28 Feet 1 meter = 39.37 inches.

MEASURIN

G TOOLS

Measuring

ToolsA measuring tool is anything used

to take a count of quantitative

data, such as weight, length, time

or temperature.

Wire Gauge

Use for

measuring the

diameter of wire.

Thickness

Gauge

Use to Measure

small gaps or

distances between

two parts

Feeler Gauge

Micrometer

It measures

thicknesses in

thousands or ten-

thousands of an

inch.

“Mike”

Dial

IndicatorUse to measure

the distance of

shaft and gears.

Vernier

Caliperis a device used to measure the

distance between two opposite

sides of an object.

Depth

GaugeIt measure the

depth of grooves

or holes.

Small-hole

GaugeMeasures the

diameter of

small holes.

Dipstick

Use to

measure

engine oil

Pressure

GaugeMeasures the

engine cylinder,

fuel pump

pressure and

the tire

pressure.

CHAPTER 6

AUTOMOTIVE

FASTENERS,

GASKETS AND

SEALANTS

FastenersHold

automotive

parts together.Soldering and

Welding

Fasteners

means to twist

or rotate

something in

order to attach

or tighten it

Screw

Fasteners

Nuts are almost

always used in

conjunction with a

mating bolt to

fasten two or more

parts together.

Nuts and

Bolts

Fasteners

Are metal pins

used to fasten

parts together.

Rivets

Fasteners

Internal

Snap RingsExternal

Keep in

position

Prevent from

sliding

Gasket and

SealsGasketto prevent

leakage from or

into the joined

objects while

under compressio

n.

Gasket and

SealsSealused to join two

things together so as

to prevent them from

coming apart or to

prevent anything

from passing

between them.