Mechanical Aptitude Tools Flashcards

Used to add more torque when driving screws or manually drilling holes in wood. Several bits are compatible with this tool.

Answer: Brace

A brace, often called a brace and bit, is a hand-powered tool specifically designed to provide significant torque for drilling holes and driving screws, particularly in woodworking. Its crank handle and chuck mechanism allow for greater leverage and control compared to simpler hand drills. It accommodates various bits, including auger bits and screwdriver bits, making it versatile for manual drilling and fastening tasks.

Used to measure the amount of electrical current flow (calibrated in amperes).

Answer: Ammeter

An ammeter is an electrical instrument specifically designed to measure the flow of electric current in a circuit. It is calibrated in amperes (A), which is the standard unit for electric current. To measure current, an ammeter must be connected in series with the circuit component through which the current is to be measured.

Used to drive screws with a Phillips head. Compared to grip obtained with traditional slotted- or flared-tip screwdrivers, its design improves grip.

Answer: Philips Screwdriver

A Phillips screwdriver is specifically designed to fit screws with a Phillips head, which features a cross-shaped recess. This design allows for better grip and reduces the tendency for the screwdriver to cam out (slip out of the screw head) compared to traditional flat-head screwdrivers. The improved grip makes it easier to apply torque and drive screws effectively.

Used to grasp and rotate pipes without scratching the external coating.

Answer: Strap Wrench

A strap wrench is a specialized tool designed to grip and turn round objects, such as pipes or filters, without marring their surfaces. It uses a strong, flexible strap (often made of rubber or nylon) that wraps around the object, providing a secure, non-slip grip. This prevents damage to polished finishes or delicate coatings that traditional metal wrenches might scratch or deform.

A concrete, marble, etc. cutting blade for a portable circular saw.

Answer: Abrasive Disk Blade

For cutting hard, brittle materials like concrete, marble, stone, or masonry with a portable circular saw, an abrasive disk blade is used. Unlike toothed blades for wood or metal, these blades are typically made of a composite material with abrasive particles (like diamond or silicon carbide) that grind through the material. They are designed to withstand the high friction and heat generated when cutting such dense materials.

Used to file flat surfaces; suitable for usage with most materials.

Answer: Flat Files

Flat files are among the most common types of files, characterized by their rectangular cross-section and parallel cutting surfaces. They are specifically designed for filing flat surfaces, edges, and shoulders on a wide variety of materials, including metal, wood, and plastic. Their broad, flat shape allows for efficient material removal and smoothing over larger areas.

An adjustable wrench used too grip round objects like metal pipes or steel rods.

Answer: Stilson Wrench (Pipe Wrench)

A Stilson wrench, commonly known as a pipe wrench, is a heavy-duty adjustable wrench specifically designed for gripping and turning round objects such as metal pipes and fittings. It features serrated jaws that pivot, allowing it to bite firmly into the workpiece as torque is applied. This self-tightening action provides a secure grip, making it ideal for plumbing and heavy-duty mechanical work.

A manual tool for sharpening tools that is a rectangular stone made of coarse abrasive.

Answer: Whetstone

A whetstone, also known as a sharpening stone, is a traditional manual tool used to sharpen the edges of knives, chisels, and other cutting tools. It is typically a rectangular block made from abrasive materials like natural stone or synthetic compounds, available in various grits from coarse to fine. The coarse abrasive removes material quickly to establish an edge, while finer grits refine and polish it.

Used to smooth out rough edges on metal work pieces or to sharpen equipment. Additional cleaning and polishing of metal work can be done with a wire brush or buffer wheel.

Answer: Bench Grinder

A bench grinder is a stationary power tool equipped with abrasive wheels, specifically designed for tasks like sharpening tools, deburring metal workpieces, and smoothing rough edges. The high-speed rotation of its wheels allows for efficient material removal and precise shaping, making it ideal for the described functions of smoothing, sharpening, cleaning, and polishing metal.

A cutting device for chopping or hewing timber and felled trees.

Answer: Wedge Felling Axe

A wedge felling axe is a heavy-duty cutting tool specifically designed for chopping and hewing large pieces of timber, such as felling trees or splitting logs. Its robust construction and wedge-shaped blade provide the necessary force and leverage to effectively cut through dense wood, distinguishing it from other tools like sledgehammers or chisels.

Employed to indicate or check angles on a work component. A protractor is typically used as a frame of reference.

Answer: T-Bevel

A T-bevel, also known as a sliding T-bevel, is a hand tool used to mark or transfer angles from one surface to another. It consists of a handle and an adjustable blade that can be locked at any desired angle. While it doesn't measure angles directly, it allows craftsmen to accurately replicate angles, often set against a protractor, onto a workpiece.

Used as a tool to penetrate the surface of a wooden work piece with nails.

Answer: Nail Punch (Nail Set)

A nail punch, or nail set, is a specialized tool used to drive the head of a nail slightly below the surface of a wooden workpiece. This technique creates a cleaner, more finished appearance by concealing the nail head, which can then be covered with wood putty. It prevents damage to the surrounding wood that might occur if a hammer were used to sink the nail head directly.

A blade for a portable circular saw that can cut grooves and/or ridges in corrugated sheet metal.

Answer: Friction Blade

A friction blade is a type of circular saw blade designed for cutting thin metals, particularly corrugated sheet metal. Instead of having sharp teeth that shear the material, it generates intense heat through friction at the cutting edge. This heat melts the metal, allowing the blade to effectively cut grooves and ridges without traditional cutting action.

Used to cut metal or thought steel using a flame produced by a mixture of oxygen and acetylene.

Answer: Cutting Torch (Acetylene Torch)

A cutting torch, commonly an oxy-acetylene torch, uses a controlled mixture of oxygen and acetylene gases to produce an extremely hot flame. This flame is capable of preheating metal to its ignition temperature, after which a stream of pure oxygen is used to rapidly oxidize and cut through thick steel and other ferrous metals. This process is known as oxy-fuel cutting.

Used to drill holes in wood, metal, or plastic using a power drill.

Answer: Twist Drill Bit (Morse Drill)

A twist drill bit, sometimes referred to as a Morse drill (referring to a type of shank), is the most common and versatile type of drill bit. Its helical flutes are designed to efficiently remove chips from the hole while drilling. These bits are widely used with power drills to create holes in various materials, including wood, metal, and plastic.