1 Wrench /rɛntʃ/ Anahtar
A tool with shaped jaws or a closed ring that grips a nut, bolt head or fitting so that torque can be applied to tighten or loosen it. Its length provides the lever arm that converts hand force into turning moment.
Tools, Equipment & Measurements English covers hands-on vocabulary — instruments, gauges, calibration, workshop tools and units of measurement. This free glossary lists the 60 most frequently used of the 300 Tools, Equipment & Measurements terms in the Engineering English iOS app — each with IPA pronunciation and a working definition. In the app, every term also includes example sentences, translations in 21 languages, flashcards and AI conversation practice.
Ask for the wrong tool and the job stops: workshop and laboratory work depends on naming instruments, gauges and units correctly. Calibration certificates and equipment manuals use exactly this vocabulary, whatever country the workshop is in.
Last updated: July 30, 2026 · How terms are selected and ranked · 🇹🇷 Türkçesi
Quick answer: The 10 most frequently used Tools, Equipment & Measurements terms in English are Wrench, Screwdriver, Technical Drawing, Hand Tool, Socket Wrench, Torque Wrench, Pliers, Hammer, Power Tool, Drill Machine. The full Engineering English library contains 300 Tools, Equipment & Measurements terms with pronunciation, example sentences, translations and flashcards.
A tool with shaped jaws or a closed ring that grips a nut, bolt head or fitting so that torque can be applied to tighten or loosen it. Its length provides the lever arm that converts hand force into turning moment.
A hand tool with a shaped tip that engages the recess in a screw head so the screw can be driven in or withdrawn. Tip profiles such as slotted, cross and hexalobular must match the fastener to avoid damage.
A precise graphical document that communicates the shape, size, materials and tolerances of a part or structure using standardized lines, views and symbols. It serves as the legally controlled instruction set for manufacturing and inspection.
A manually operated implement that works only from the physical force applied by the user, without an electric, hydraulic or pneumatic drive. It is used to cut, shape, fasten, hold or measure materials in workshop and field tasks.
A tool consisting of a cylindrical socket that fits over a nut or bolt head and a drive handle, often with a ratchet, that turns it. The enclosed socket grips all faces of the fastener and spreads the load evenly.
A calibrated wrench that measures and limits the turning moment applied to a fastener, signalling or releasing when a preset value is reached. It ensures joints are tightened to the clamping load specified by the designer.
A hinged hand tool with two opposing jaws that multiply hand force to grip, bend, twist or cut small workpieces and wires. The pivot position determines the clamping force available at the jaws.
A striking tool with a weighted head on a handle that delivers a short impulse of high force to a workpiece. It is used to drive nails, shape metal, seat parts and free seized components.
A tool driven by an electric motor, compressed air or a hydraulic supply instead of muscular effort. The external energy source gives higher speed, force and consistency than an equivalent manual tool.
A machine that rotates a cutting bit and feeds it axially to produce cylindrical holes in a workpiece. Speed and feed are set according to the bit diameter and the material being cut.
A measuring instrument with two jaws that are set against a feature to determine an external, internal or step dimension. The reading is taken from a scale, dial or digital display attached to the sliding jaw.
A precision instrument in which a finely threaded screw advances a spindle towards an anvil, converting rotation into a very small, readable displacement. It measures external, internal or depth dimensions to about one micrometre resolution.
A flexible graduated strip of steel or fibreglass that is extended to measure lengths and distances larger than a rule can cover. It is retracted into a case and is read directly against the marked scale.
A portable electrical instrument that measures voltage, current and resistance, and usually tests continuity and diodes. Selecting the wrong function or range can damage the instrument and endanger the user.
A drawing method in which parallel projection lines strike the picture plane at right angles, producing undistorted front, top and side views of an object. Because each view preserves true lengths in its own plane, dimensions can be read directly.
A view produced by imagining the object cut along a defined plane and removing the near portion, so that internal features appear as visible outlines. The cut material is marked with hatching and the cutting plane is identified on an adjacent view.
A thin continuous line, terminated by arrowheads or slashes, that spans between two extension lines and carries the numerical size of the feature it measures. Its placement tells the reader exactly which distance the value applies to.
A computer application that lets engineers create, edit and document precise two-dimensional geometry and three-dimensional models of products or structures. It stores the design digitally so that drawings, analyses and manufacturing data can all be derived from one source.
The creation of a digital three-dimensional representation of a component or assembly that carries volume, mass properties and surface geometry. The resulting model can drive drawings, simulation, rendering and machine toolpaths.
A precisely finished rectangular block of hardened steel or ceramic made to an exact length, used as a physical length standard for setting and calibrating measuring instruments.
A lever-type comparator with a pivoting contact stylus and a graduated dial, used to detect very small differences in position, runout or alignment rather than absolute size.
A rectangular box divided into compartments that states a geometric characteristic symbol, the tolerance value with any material condition modifier, and the applicable datum references. It is the formal way of specifying a geometric requirement on a drawing.
A location control defining a tolerance zone, usually a cylinder, centred on the theoretically exact location established by basic dimensions and datums. The axis or centre plane of the actual feature must lie entirely within that zone.
A neutral three-dimensional data file conforming to the ISO 10303 standard that carries precise solid and surface geometry between different CAD systems. It preserves exact boundary representation but usually not the parametric feature history.
A laboratory instrument that produces repetitive electrical waveforms such as sine, square, triangle and pulse signals with adjustable frequency, amplitude and offset. Engineers use it to stimulate a circuit under test.
A laboratory source that delivers regulated direct voltage and current with adjustable limits and metering. It powers prototypes and devices under test while protecting them through settable current limiting.
A double-ended hand wrench with an open jaw at one end and a closed ring of the same nominal size at the other. The two ends let a worker start a fastener quickly and then apply higher torque safely.
A driver with a tapered cross-shaped tip that engages the four angled slots of a matching screw recess. Its self-centring geometry aligns the tool and intentionally cams out under excessive torque.
A driver with a single wedge-shaped blade that fits the straight slot of a screw. Blade width and thickness must match the slot so torque transfers without burring the head.
A battery-powered rotary tool that turns drill bits or driver bits through an adjustable clutch and gearbox. It provides portable hole-making and fastening away from mains supply.
A cylindrical cutting tool with two helical flutes and a pointed cutting edge that produces round holes in solid material. The flutes evacuate chips and allow coolant to reach the cutting lips.
An L-shaped hexagonal bar that fits the internal socket of a cap screw so the fastener can be turned. The short and long arms give a choice between higher torque and faster rotation.
A wrench with one movable jaw set by a worm screw, allowing a single tool to fit a range of nut sizes. Its lower grip accuracy makes it a general-purpose rather than a precision tightening tool.
A clamping device mounted on a bench or machine table whose parallel jaws are closed by a screw to hold a workpiece rigidly. Secure holding allows sawing, filing, drilling and machining to be performed safely.
A device that presses two or more parts together and holds them in position while gluing, welding, drilling or measuring is carried out. It applies a controlled force without permanently joining the parts.
An organised set of tools assembled in a case or roll for a defined range of maintenance or assembly tasks. Its contents are chosen so a technician can complete the expected work without returning to the workshop.
A handheld powered tool that spins an abrasive or cutting disc at high speed on a shaft set at right angles to the motor. It is used to cut, grind, deburr and clean metal surfaces.
A powered tool that delivers rapid rotational hammer blows to a socket, producing very high tightening or loosening torque with little reaction force on the operator. It is used mainly on large or seized fasteners.
A powered saw that cuts by rotating a toothed or abrasive disc through the workpiece along a straight line. Blade type, tooth count and depth setting are matched to the material and the required cut quality.
A machine that raises the pressure of atmospheric air and stores or delivers it to drive pneumatic tools and processes. Its output is described by delivered flow rate and working pressure.
Equipment that supplies and controls the electrical energy used to fuse metal parts together, setting current, voltage and often wire feed. The chosen process and parameters determine penetration and joint strength.
A caliper whose sliding jaw carries an auxiliary vernier scale that subdivides the main scale, allowing readings to hundredths of a millimetre. The user reads the coincident vernier line to obtain the fractional part.
A comparative measuring instrument in which movement of a spring-loaded plunger is amplified and shown on a graduated dial. It reveals deviations such as runout, flatness error and misalignment rather than absolute size.
An instrument containing a sealed liquid vial with a bubble that indicates when a surface is horizontal or vertical. The bubble settles at the highest point of the curved vial, showing deviation from level.
An instrument whose hinged jaws encircle a conductor and measure the current from the magnetic field around it. Because the circuit does not have to be opened, readings are taken safely on live installations.
A published set of rules, issued by bodies such as ISO or ASME, that fixes line types, view arrangement, symbols, lettering and tolerance notation for engineering documents. Following it guarantees that a drawing carries the same meaning to any qualified reader.
A pictorial representation in which the three principal axes are drawn at equal angles of one hundred twenty degrees and share a single scale. It shows length, width and height in one picture so that overall form is grasped quickly.
An enlarged partial view of a small region of a drawing, drawn at a larger scale and linked to the parent view by a labelled circle or boundary. It makes fine features such as grooves, radii or thread runouts legible and dimensionable.
The bordered panel, normally placed in the lower right corner of a drawing sheet, that records the part name and number, scale, material, projection symbol, revision level and approval signatures. It identifies and controls the document.
A dashed line used to represent an edge or surface boundary that is obscured from the viewer by material in front of it. It lets a single view describe internal or rear geometry without cutting the object.
A thin long-dash short-dash line that marks the axis of a cylindrical feature, the plane of symmetry of a part or the path of a bolt circle. It provides the geometric reference from which positions are dimensioned.
A symbolic language that specifies permissible variation of form, orientation, location and runout of features relative to defined datums. It communicates functional requirements far more precisely than plus-minus limits on individual sizes alone.
A digital model whose geometry is controlled by named dimensions and relationships rather than fixed coordinates, so that changing one value updates all dependent shapes. It supports rapid design variation and family creation from a single definition.
A modelling operation that sweeps a closed sketch profile along a straight path to add or remove material over a specified depth. It is the most common way of turning a two-dimensional outline into solid geometry.
A digital structure that positions several part models relative to one another to represent a complete product or subsystem. It supports interference checking, mass property calculation, motion study and generation of assembly drawings.
A computer application that predicts physical behaviour of a design by numerically solving equations for stress, vibration, heat flow or fluid motion. It lets engineers evaluate performance and failure risk before any hardware is built.
A prescribed value of displacement, force, temperature, pressure or flow imposed at the edges of a computational model to represent its surroundings. Choosing it wrongly distorts the whole solution regardless of mesh quality.
The collection of instruments, machines and accessories used to carry out controlled measurements and tests on materials, components or systems. Its accuracy class and calibration status determine how far the recorded data can be trusted.
A dedicated stationary rig that holds a component or system, applies controlled loads or operating conditions and records its response. It reproduces service duty in a repeatable way without running the whole product.
A measuring device that displays how a voltage varies with time, allowing rise times, pulse widths, noise and timing relationships to be observed directly. Triggering settings freeze a repetitive waveform so that its shape can be examined.
The 10 most frequently used Tools, Equipment & Measurements terms in the Engineering English library are Wrench, Screwdriver, Technical Drawing, Hand Tool, Socket Wrench, Torque Wrench, Pliers, Hammer, Power Tool, Drill Machine. This page lists the top 60 of 300 terms, ranked by usage frequency.
300. Each one includes an IPA pronunciation, a plain-English definition, a real example sentence and translations in 21 languages; the 60 most frequent are free to browse on this page.
Every term on this page shows its IPA transcription — for example Wrench is pronounced /rɛntʃ/, Screwdriver is /ˈskruːˌdraɪvə/ and Technical Drawing is /ˈtɛknɪkəl ˈdrɔːɪŋ/. The Engineering English app also plays audio for each term and checks your pronunciation with speech recognition.
Get every term with example sentences, audio, 21-language translations, flashcards and AI practice.
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