NAVEDTRA 14256, TOOLS AND THEIR USES CH 2-29

The st eel rule is graduated in what amount of an inch?

.025

ID micrometers have a range of what when used with one-half inch spacers?

.500

Outside micrometers are used to measure an outside distance or diameter to an accuracy of what amount of an inch?

0.001

What is the pitch of the micrometer screw?

0.05

The types of micrometers commonly used are made so that the longest movement possible between the spindle and the anvil is what distance?

1 inch

The difference between the width of one of the 25 spaces on the Vernier scale and one of the 24 spaces on the steel rule is what fraction of an inch?

1/1000

The spring divider is available in sizes from 3 inches to how many inches of in length?

10

The steel rule is divided into centimeters (cm) and the longest line represents how many millimeters each?

10

The wing-type divider is available in 6,8, and up to how many inches in length?

12

The smallest spindle is 4 inches long, the average 9 to 12 inches, and the largest of a surface gage is how many inches?

18

Electrical workers requiring head protection necessary to their duties or to the working environment, must wear insulating safety helmets or all-purpose protective helmets which must be capable of withstanding what volt minimum proof-tests?

20,000

Regular hard hats must be insulated so that personnel may be protected from accidental head contacts with electrical circuits and equipment at comparatively low voltages (less than how man volts)?

2200

Height gages are available in several sizes. most common are the 10, 18, and which other size in English measure?

24

The frames of micrometers, are available in a wide variety of sizes, from 1 inch up to as large as how many inches?

24

How many parts is the beveled edge of the thimble graduated into?

25

How many parts is the vernier scale divided into?

25

Steel tapes are made from 6 to about how many feet in length?

300

How many threads per inch does the micrometer screw have ?

40

What is the range of a 6-inch micrometer?

5"-6"

How many feet on a nylon, silk or linen cord does the surveyor's brass plumb bob come with at a minimum?

7

What allows operators to make minor corrections to height and rotation to make sure the bob hangs straight?

Adjustable cap

What are used as gages for leveling and setup work?

Adjustable parallels

Which devices consist of two flat outside working surfaces jointed at right angles?

Angle plates

What are used for attaching gages to lathes, milling machines, sharpers, or any machine where graduations are difficult to read?

Base indicator holders

There are two basic types of machinist's scribes, single pint pocket along with what else?

Bent point-straight point

what is used to establish an angle and determine its relationship to other surfaces?

Bevel protractor

what is used to find the exact lengths of common braces?

Brace measure

A level may be check for accuracy by placing it on a known level surface and noting the position of the what?

Bubble

What is used to measure diameters?

Calipers

What are too bags usually made of?

Canvas

Which type of level is used in construction for checking for true vertical, true horizontal, and 45 degree angles?

Carpenter's

What is made up of two parts: body or blade, and the tongue?

Carpenters Square

Which type of tool boxes generally contain larger tools, such as specialized automotive tools or machinist's tools , requiring a more permanent location?

Chest

Which class of gauge is good for lapped finish to slightly increased tolerances for inspection and working gages?

Class Y

Which class gauge is a commercial finish (ground and polished, but not fully lapped) for a large percentage for working gages in which tolerance are fairly wide, and where production quantities are not so large?

Class Z

Which class of gauge is precision lapped to close tolerance for many types of masters and the highest quality working and inspected gages?

Class x

The outside micrometer, the inside micrometer and which other type of micrometer are the most commonly used?

Depth

Which type of depth gages are for rapidly checking depths of holes , recesses , slots, scratches, and paint thicknesses?

Dial

What can the trammel also be used as by changing the points?

Divider

Which type of instruments are used for measuring distance between two points, transferring or comparing measurements directly from a rule, or for scribing an arc, radius, or circle?

Dividers

V-blocks and clamps are especially used for grinding , milling or what purposes?

Drilling

What is used to compute the number of board feet in a given piece of lumber?

Essex board measure

What is necessary because of hazards caused by infrared and ultraviolet radiation, or by flying objects such as sparks globules of molten metal, or chipped concrete and wood, etc?

Eye protection

What are more common type of rules and types divided into?

Fractions , inches, and feet

What should be used whenever you are required to handle rough, scaly, or splintery objects?

Gloves

The depth gage will give direct readings on the dial in what amount of an inch?

Half-thousands

What is used in the layout of jigs and fixtures and on a bench that is used to check the location of holes and surfaces

Height gage

What caliper is used for finding shaft centers or locating shoulders?

Hermaphrodite calipers

Which type of level is made of a special design casting which insures its lightness, strength, and rigidity that is use in the construction industry?

Iron bench

Which tools are designed to prove whether a plane or surface is in the true vertical or true horizontal?

Levels

What is a single vial in a metal case with a hook on each end for hanging on a cord which is used to check whether two points are level, such as two points on a floor or in an elevation?

Line level

What should measurements made with depth gages be on?

Longitudinal axis

A square with what is no good and must be replace?

Loose stock

What is used to mark or score on steel, glass, aluminum, copper or similar surfaces?

Machinist's scribe

Which type of level has a ground and graduated main vial?

Master precision

Which type of depth gages have a range from 0 to 9 inches, depending on the length of extension rod used?

Micrometer

Which instruments are used to measure distance to their nearest one-thousandth of an inch?

Micrometers

What should the metal parts of all micrometers be lightly coated with to prevent rust?

Oil

What is a precision instrument that is used to establish a true vertical transfer and line-up reference point, and to take readings or soundings in tanks and voids?

Plumb bob

Which type of tool boxes are used for carrying and storing a variety of hand tools?

Portable

Ring and snap gages along with what else are used as standards to determine whether or not one or more dimensions of a manufacture post are within specified limits?

Precision gages Blocks

What is the longest movement possible between the spindle and the anvil of the micrometers called?

Range

What are designed to count the number of revolutions of wheels, shafts, etc. ?

Registering speed indicators

What is the most common measuring tool?

Rule

Which measuring device is divided into twelve inches?

Rule

What measures the depth of holes, slots, counterbores, and recesses?

Rule depth gage

What can be used for measuring where accuracy is not an extremely critical factor?

Rule or tape

What protect an prevent injury or loss of toes?

Safety shoes

Who should broken tools be returned to?

Section chief

What are used along with a scale to find a measurement?

Simple calipers

Common tapes and rules usually are not graduated smaller than what?

Sixteenths

What calipers can be used for measuring outside and inside dimensions?

Slide calipers

Surface gages are made in several sizes and are classified by the length of the what

Spindle

Which type of dividers consist of two sharp points at the end of straight legs, held apart by a spring and adjusted by means of a screw and nut?

Spring

Which type of machinist's level is mounted on a raised base that is used to span existing cabling, piping, or similar obstructions?

Striding

Which measuring tool is used to transfer measurements to work by scribing a line, and to indicate the accuracy or parallelism of surfaces?

Surface gage

What provides a true , smooth, plane surface that is often used as a level base for surface and height gages from which to make accurate measurements?

Surface plate

What is used for testing bevels and laying out angles?

T-bevel

The metric system is based upon multiples of what?

Ten

What are used for storing tools?

Tool Boxes

What can be used to measure distance beyond the range of a caliper?

Trammel

What are used for measuring chamfered grooves or flanges?

Transfer calipers

What is used to set or check lines which are at right angles (90 degrees) to each other?

Try square

Which tips have extremely hard points and are used on hardened steel or glass?

Tungsten carbide

Slide calipers and what else have their own scales?

Vernier calipers

Which type of areas are heavier plumb bobs better suited for?

Windy

Which type of divider has a steel bar that separates the legs, a lock nut for setting a rough measurement, and an adjustment screw for fine adjustments?

Wing

How many sets of graduations does a rule have?

four

Up to how many feet long can folding rules be?

six