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.
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.