Measuring Tools Flashcards
What is a general rule in reading measurements?
Always reduce fractions to their lowest terms
How many graduated division marks are there in a rule?
4
What is attached at the end of the tape or rule and normally part of the measurement ?
Hook
What is the best and proper way of measuring bolts and screws?
Holding them up against a rigid rule
How is an outside diameter of a pipe measured?
Using a FLEXIBLE type rule, line up the end of the rule with one side of the pipe then swing the rule through an arc and take the MAXIMUM reading.
What type of caliper has legs with a spring hinge that are linked by a screw?
Spring-joint caliper
How are calipers adjusted?
Pulling and pushing the legs to open or close them
What is the other name of hermaphrodite caliper?
Odd-leg caliper
What is hermaphrodite caliper usually used for?
Locating the center of a shaft or shoulder
What caliper is used for measuring inaccessible outside dimensions?
Transfer firm-joint
What part of the caliper is tightened after taking the measurement?
Binding nut
How many types of micrometers are there ?
4
On a micrometer , how many threads per inch are on a spindle?
40
What scale is used to obtain accurate measurements up to ten-thousandth of an inch?
Vernier scale
What range of increments do the extensions/spindles rods usually come in?
1to2 inches
What is used to measure inside diameter of a pump casing or cylinder
Inside micrometer
What micrometer is used to determine the pitch diameter of a screw
Screw micrometer.
How many equal parts is the thimble scale divided into?
25
In what training manual can you find tool descriptions and instructions for their use?
NAVEDTRA 12085
What is aircraft launch and recovery equipment manual NAECMISC-51-OR732?
ALRE Tool Control manual
In the choke ring gage set, what is on the top tier of the pelican case
Master ring and battery charger
In the choke ring gage set, what is on the bottom tier of the pelican case?
1.5mm Allen wrench
What must be done to the indicator before taking choke ring measurements?
Calibrated to zero
How many graduated division marks does a rule normally have?
4
What device must be used to measure a circumference of a pipe?
Flexible -type rule
What is used in conjunction of simple calipers to determine the thickness or diameter of a surface?
Outside micrometer
How do you identify an inside micrometer?
They have straight legs with solid point
What type of caliper is used in measuring hard-to-reach inside dimensions?
Inside transfer firm joint
What type of micrometer is used in measuring outside diameter?
Outside
Micrometer sets usually come with a micrometer head, spindles (rods) and which of the following parts?
Spacing collar
What is the term for the maximum movement of a spindle in a micrometer?
Range
What is the longest measurement , in inches, a micrometer can make?
2
How many equal parts is the thimble scale divided into?
25
On the depth micrometer, what is part is interchangeable?
Spindle (rods)
When using a depth micrometer, what precaution is necessary to obtain an accurate measurement?
Make sure micrometer is placed on a flat , smooth surface
To comply with NAECMISC-51-OR-732
Tools must be marked, etched, or stenciled.
What must be done to make sure all tools are accounted for upon job completion?
Double-check tool inventory
What is used for measuring catapult choke ring axes?
Choke ring gage set
In which case is the measuring assembly stored for protection and when entering water brake tank area?
Gage
What size of an Allen wrench is used to install and remove the indicator from the gage body ?
1.5mm
What reading of the indicator would be considered a good reading?
7.920
The stationary ring (yellow) and which of the following components comprise a measuring assembly?
….
How is a caliper adjusted to scale dimensions
Hold one leg firmly and adjust the other leg to the desired dimension.
