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Firefighter Exam - Mechanical Aptitude
Terms in this set (80)
Has linear gradations to measure a workpiece. It can double as a straightedge. (Average length is 12in.)
Steel Tape Measurer
Has linear gradations (metric or English) on a flexible metal tape. The tape automatically retracts into a small housing for convenience. (Normal length is 3 to 19 feet.)
Wing-Up Tape Measure
Has linear gradation (metric or English) on a flexible metallic tape used to measure. The tape can be retracted into a circular housing by the use of a small crank on one side of the housing. (Normal length is 30 to 100 feet.)
Used in determining precise measurements. Can measure from 1 to 300 millimeters, depending on the tape selected.
Used in determining precise internal or external measurements. Measuring capacity is 6 yo 72 inches or 150 to 1800 millimeters.
Use is comparable to the vernier calipers; however, the gradations are not precise. Its measuring capacity is up to 3 inches.
Outside Calipers (Bow Calipers)
Used to transfer external measurements from a rule, or to match two items to fit. Measuring capacity is up to 3 inches.
Used to transfer internal measurements from a ruler, or to match two items to fit.
Spring Dividers (Bow Compass)
Used to inscribe circles or arcs or to calibrate equal divisions on a line.
Used to determine depths of holes, grooves, and mortices.
Screw Pitch Gauge
Used to determine the pitch of a machined thread. Each blade is calibrated in metric units.
Carpenter's Steel Square (Framing Square)
Used to check the squareness of framing (i.e., 90-degree or right angles). There are metric or English-system gradations for measuring as well.
An all-purpose tool that can measure and serve as a try square, miter square, and level. Measuring capacity in metric or English gradations is 12 inches.
Used to determine if a workpiece is square (i.e., has 90-degree right angles).
Used as an instrument to draw or plot angles (0 to 180 degrees) on a surface.
Used to mark or verify angles on a workpiece. Normally a protractor is used to serve a point of reference.
Used to determine a true horizontal line or accurate level of a surface.
Used to determine a true vertical line.
Used to cut wood, planks, sheets, or panels to desired size.
Back Saw (Tenon Saw)
Primarily used to cut fine joints in wood, as in a tenon, lap, or dovetail. It can also be used in conjunction with a miter box to cut accurate 45- or 90-degree angles.
Used in making curved cuts in wood or plastic.
Used to cut holes in a panel. This saw is not restricted to an edge of a workplace, like the coping saw, because of the lack of a frame.
Used to cut metal sheets, pipes, plastics, etc.
Portable Circular Saw
Used to cut lumber or plywood to desired size. Saw blades that can be used with this tool are:
1. Cross cut
2. Rip cut
4. Carbide tipped
5. Metal cutting
6. Friction blade
7. Abrasive disk
Cross Cut Blade
Cuts across grain of lumber
Rip Cut Blade
Cuts parallel to the grain of lumber
Cuts lumber in any direction
Carbide Tipped Blade
Cuts particle board or lumber with the primary advantage of teeth remaining sharper for longer periods of time
Metal Cutting Blade
Cuts thin sheets of copper, aluminum, and other metals
Cuts corrugated sheet metal
Abrasive Disk Blade
Cuts concrete, marble, etc.
Used in much the same way as a hand- or compass saw to cut wood, plastic, or thin-gauge metal depending on blade section.
Saber Saw (Powered Jigsaw)
Used to cut curves in various materials depending on blade selection.
Used to fell timber and cut logs to desired lengths.
Used to general capentry, it can pull extract nails.
Ball Peen Hammer (Engineer's Hammer)
Used in metalworking such as rivet setting or metal forging.
Club Hammer (Hand-Drilling Hammer)
Used for heavy-duty work involving masonry drills or chisels. The head can weight up to four pounds.
Used for heavy-duty work such as breaking concrete, driving posts, etc. The head can weigh from two to twenty pounds.
Soft-Faced Mallet (Rubber Mallet)
Used to drive materials without causing any damage to the took involved or to the surface of a workpiece.
Conventional Straight-Shank Screwdriver
Used to drive slotted head screws.
Used to drive Phillips-head screws. Its design enhances one's grip compared to that achieved with convectional slotted- or flared-tip screwdrivers.
Used when a fair amount of torque is required on a screw. This design enhances your grip still more than a Phillips or flare-tipped screwdriver.
Stubby Screwdriver (Close-Quarter Screwdriver)
Used to drive screws where space is fairly restricted.
Used in driving or loosening relatively small screws such as those found in eyeglass hinges, clocks, wristwatches, etc.
Offset Screwdriver (Cranked Screwdriver)
Used when standard screwdrivers cannot fit. Additionally, these screwdrivers enable the user to place a fair amount of torque on the screw being driven.
Used to tighten or loosen nuts and bolts from the side. This is advantageous over other wrenches in clamped areas where a nut is obstructed by something directly overhead.
Used to tighten or loosen nuts and bolts. A closed wrench of this design allows for significantly more torque to be applied without the fear of the wrench slipping and stripping the nut. Its drawback is that it takes more time to use this wrench than the open variety.
Designed to be able to reach a nut or bolt in a recessed area over an obstruction. These wrenches also have the advantage of allowing hand clearance when tightening a bolt or a nut flush with a work surface.
An adjustable wrench that can be used to tighten or loosen nuts and bolts or varied sizes.
Money Wrench (Screw Wrench)
Another adjustable wrench that can be used to tighten or loosen nuts and bolts of varied sizes. This wrench has a heavier design than a crescent wrench.
Stilson Wrench (Pipe Wrench)
An adjustable wrench used to grip round objects like metal pipes or steel rods.
Used for gripping and turning pipes without harming the exterior or finish.
One of the most common wrenches used today. Nuts and bolts can be quickly tightened or loosened with a ratchets handle, thus sparing the need to readjust for another grip as with most other wrenches.
Used to apply a calibrated force when tightening a nut or bolt as recommended by the manufacturer.
Spanner Wrench (Hook Spanner)
Used to turn special nuts or hose couplings.
Allen Wrench (Setscrew Wrench)
An L-shaped hexagonal key used to tighten or loosen a machined setscrew.
Crocodile Wrench (Bulldog Wrench)
Used to grip an turn round stock such as pipe or steel rod.
Used when cutting internal screw threads with a tap. It allows for a better and more even grip when applying pressure.
Needle-Nose Pliers (Snipe-Nosed Pliers)
Used to shape or cut thin-strand wire and grip small items (e.g., washers, nuts, etc.) in confined spaces.
Slip Joint Pliers
Used like ordinary pliers, but a pivot allows for two different jaw settings.
Curved Jaw Pliers (Channel Lock Pliers)
Used much in the same manner as slip joint pliers. There are additional settings to adjust jaw widths to accommodate larger round stock.
Used to cut metal wire.
Used to crop metal wire close to a work surface.
Used to quickly sand wood, steel, or plastic. Various abrasives embedded in the belts are used on this machine in a back and forth motion.
Used for the same purpose as a belt sander, but the abrasives are embedded in disks that are used in conjunction with a drill or off-set sander grinder.
Orbital Sander (Finishing Sander)
Used to finish sanding with light abrasive paper.
Used to file flat surfaces; can be used on most types of material.
Used to file angles or square corners (e.g., saw teeth).
Round File (Rat-Tail File)
Used to file angles or square corners (e.g., saw teeth).
Used to manually drill holes in wood or provide extra torque in driving screws. Bits that can be used with this tool are:
1. Expansive bit
2. Auger bit (Twist bit)
3. Turn screw bit
An adjustable spurred cutter, which allows holes of various sizes to be drilled in wood.
Auger Bit (Twist Bit)
Various sizes of helical twists and a prominent lead screw are characteristic of this form of bit for drilling holes in wood.
Turn Screw Bit
Used to drive screws.
Used to bevel or widen the opening of a pipe.
Used in principally the same way as a brace, the difference being in speed and flexibility of using various accessories (e.g., sanding disks, buffing, wire brushes, lathe, etc.) Bits that can be used with this tool are:
1. Spade bit (Flat bit)
2. Twist drill (Morse drill)
3. Masonry drill
4. Countersink bit
Spade Bit (Flat Bit)
Used to drill wide holes in wood or plastics.
Twist Drill (Morse Drill)
Used to drill holes in wood, metal, or plastics.
A carbide tip that allows this bit to be used to drill holes in material such as concrete, marble, stone, etc.
Used to create a recess hole to accommodate the head of a countersink screw.
Used to make and guide the placement of a drill point.
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