Math & Measurement
Converting the fraction 3/8 inches into a decimal yields this standard value.
What is 0.375 inches?
In SolidWorks, two circles that share the exact same center point are defined using this geometric constraint keyword.
What is Concentric?
According to standard CAD drafting line conventions, object lines showing visible edges are drawn thick, while hidden lines showing hidden geometry are drawn thin and formatted with this pattern.
What are Dashed lines (or short dashes)?
Standard multi-view technical drawings in North America use this projection layout method to position top, front, and side views.
What is Third-Angle Projection?
In Marvel's Iron Man, Tony Stark uses an AI assistant (later replaced by FRIDAY) named this to help him design, analyze, and render his armor.
What is J.A.R.V.I.S.?
This precision hand measurement tool uses a sliding scale with a rotating thimble to measure small thicknesses or diameters accurately down to thousands of an inch.
What is a Micrometer?
Assigning a specific material (like 6061 Aluminum or ABS plastic) in CAD allows the software to calculate physical properties like volume, surface area, and this point representing balance.
What is the Center of Mass (or Center of Gravity)?
This specific line type features alternating long and short dashes and is used to mark the exact middle axis of symmetrical features like holes or cylinders.
What is a Center Line?
According to ANSI standards, technical drawing annotations and lettering should always be rendered in this sans-serif font style and set in ALL CAPS.
What is Gothic (Gothic Lettering)?
This popular block-building video game lets players build digital mechanisms, logic gates, and mechanical traps using a mineral called Redstone.
What is Minecraft?
If a part measures 25.4 mm in length, its equivalent length in imperial units is this
What is 1 inch?
This basic CAD feature generates a 3D solid body by extending a closed 2D sketch profile linearly along a straight direction.
What is an Extrusion (or Extruded Boss/Base)?
This sectional view cuts all the way through a part along a straight line to reveal internal geometry, splitting the view completely in half.
What is a Full Section View?
This type of shaft-and-hole fit occurs when the shaft is intentionally larger than the hole, requiring force or heat expansion to assemble.
What is an Interference Fit (or Press Fit)?
NASA famously lost the $125 million Mars Climate Orbiter in 1999 because software sent data in Imperial units (Pounds-force) while the ground system expected units from this system.
What is the Metric System (or SI / International System of Units)?
This coordinate system records point locations using a distance and an angle () relative to a origin point rather than X and Y offsets.
What is a Polar Coordinate System?
This geometric relationship ensures a straight sketch line touches a curved circle or arc at exactly one point without crossing through it.
What is Tangent?
Cross-hatch section lines indicating cut solid material are typically drawn evenly spaced at this angle unless another angle is required for clarity.
What is 45 degrees?
A tolerance specified as 1.500-0.000+0.005 is an example of this specific type of tolerance because variation is permitted in only one direction.
What is a Unilateral Tolerance?
In the movie Back to the Future, Doc Brown converts a DeLorean sports car into a time machine powered by this fictional 1.21-gigawatt device.
What is the Flux Capacitor?
On an architectural or engineering drawing plotted at a scale of 1:4, a line measured as 3 inches on paper represents this real-world dimension.
What is 12 inches (or 1 foot)?
To calculate the mass of a modeled component, CAD multiplies the calculated 3D volume by this material property ratio (m/V).
What is Density?
According to ANSI/ASME drafting standards, a standard thick object line is approximately 0.7 mm, while a standard thin dimension or hidden line uses this approximate line thickness.
What is 0.35 mm (or 0.25 mm–0.35 mm)?
This drafting view feature enlarges a small or detailed area of a primary view inside a circle at a larger scale to clearly display small features and dimensions.
What is a Detail View?
This 19th-century inventor designed the Difference Engine and Analytical Engine, earning him recognition as the pioneer of mechanical computing.
Who is Charles Babbage?