Exam Flashcards
How man Oz in a pint
How many pint in quart
How many quart in a gallon
20oz in 1 pint
2pt in a quart
4qt in a Gallon (Gal)
How many feet in a yard
How many yards in a mile
How many miles is 1 nautical mile
3 feet in a yard
1760 yards in a mile
1.15 miles in a nautical mile
Name the 5 groups of calipers
Outside
Inside
Odd leg
Spring dividers
Trammel
Name the 4 squares and their uses
Engineers (general use)
Precision (milling or lathe)
Cylindrical (checking accuracy of other measuring and testing equipment like squares)
Master (kept in lab and not used in workshop)
What are the uses of a combination set
Rule.
Straight edge.
90° square.
45° bevel.
Depth gauge.
Height gauge.
Checking verticals.
Checking horizontals.
Measuring angles.
Angles to the horizon.
Find centre of round object.
What is a bevel gauge
The bevel can be used to duplicate an existing angle, or set to desired angle by
using it with any number of measuring tools (such as a protractor, combination
square).
What is a clinometer
Device that measures slope of a surface relative to the horizontal. Common in flight control settings
Pendulum angle thing
What are the 2 scales of vernier calipers
Main and vernier scale
How accurate are vernier calipers?
Metric and imperial
Reads down to 0.02mm and 0.001”
What are the principle parts of a micrometer
Frame
Anvil (metal part that doesn’t move)
Spindle (metal part that moves)
Sleeve or barrel (part with numbers on it)
Thimble (thing you spin)
What are I side micrometers used for
Inside diameters and holes
Distances between internal parallel surfaces
Other inside dimensions
What do tube micrometers measure
The thickness of tubes or machined rounds
What’s the starting reading of an inside micrometer
Metric and imperial
50mm and 2 inches
How can the range of a depth micrometer be increased?
Using interchangeable extention rods
What are bored gauges
Allow for measurement of Internal bores in components or material. Used to measure very small range of dimensions and are used to compare measurements taken
What are telescopic and small hole guages
Comparator tool used to measure inner surfaces. Then used with a micrometer to get an accurate measurement of dimention
What are the different types of limit guages
Plug
Ring
Snap/caliper
What are the different types of comparator gauges
Screw pitch/ thread
Feeler
Radius
Wire
What are the 3 grades of a gauge block
AA (laboratory)
A+ (inspection)
B (shop)
How are surface plates made
Fine grained cast iron that is machined flat on upper surface and then finished to close limits by hand scrapping
The underside is heavily ribbed to prevent distortion and reduce deflection
What is more accurate, a surface gauge or a scribing block
Surface gauge is more accurate. Has knurled screw for fine adjustments
How are files classified
Type of cut and grade of cut
Shape (profile)
Length (dimenions)