Radius and Diameter Callouts: A Factor of Two Changes the Interface
Preserve the difference between a circle's radius and diameter when comparing a nominal opening or rounded feature.
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Machine Guide Library — Page 22
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Arc Length and Chord Distance: Choose the Actual Geometric Quantity
Choose distance along a circular arc or straight distance between its endpoints before interpreting a curved-path requirement.
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Pre-Sale Machine Demo or Order FAT: Agree Which Visit You Are Booking
Distinguish an enquiry-stage machine demonstration from an order-specific FAT by agreeing the visit purpose, configuration, samples and evidence scope.
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Angular Dimensions: A Stated Angle Is Not a Linear Gap
Retain angle units and geometric radius when relating an orientation change to a nominal displacement.
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Ordinate Dimensions: Retain the Origin with Every Coordinate
Compare ordinate feature locations using the same defined origin and coordinate directions.
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Baseline and Chain Dimensions: Locate Where Each Nominal Offset Starts
Distinguish nominal dimensions from one base reference from consecutive dimensions between adjacent features.
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Reference Dimensions: Separate Driven Information from Design Control
Distinguish a driven dimension reporting dependent geometry from a value that controls the model feature.
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Dimension Precision: A Rounded Display Does Not Add a Tolerance
Keep displayed decimal precision separate from the nominal geometry and its stated permitted limits.
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Dual Units on Drawings: Retain the Primary Value Behind Converted Text
Trace rounded alternate-unit dimension text back to its primary geometric value before comparing an interface.
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Drawing Crop Boundaries: Visible Extent Does Not Define Complete Geometry
Interpret the boundary of a cropped drawing view without treating the visible extent as the complete component.
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Paper-Space Sketches: Annotation Geometry Can Differ from the Model
Distinguish drawing-only annotation geometry from design-model geometry before treating a line as a physical interface.
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Associative Dimensions: Determine Whether a Model Change Updates the Note
Determine whether a dimension remains linked to its intended geometry when the model or view changes.
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Manual Dimension Overrides: Visible Text Can Disagree with Model Geometry
Check whether manually supplied dimension text replaces the calculated geometric value in a released drawing.
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Centre Marks and Axes: Identify the Geometric Reference Before Comparing Features
Use centre marks and centreline references without interpreting their graphical alignment as actual manufactured coaxiality.
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Section Hatching: A Drawing Pattern Is Not a Material Certificate
Interpret section hatch appearance as drawing information rather than evidence of installed material identity.
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Assembly Visibility and Suppression: A Hidden Item May Still Be in the Parts List
Distinguish a component hidden for drawing clarity from a component suppressed from the represented assembly listing.
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Parts List Item Numbers and Quantities: One Balloon Is Not One Physical Piece
Read a parts-list item identifier separately from its quantity when interpreting repeated assembly components.
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Drawing Model State: Identify the Configuration Shown on the Sheet
Identify the selected model configuration represented by a drawing before comparing it with another assembly state.
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Annotation Text Height and Model Scale: Separate Readable Notes from Part Geometry
Keep drawing annotation height separate from the scale applied to component geometry.
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Laser Diffraction Obscuration: Check the Concentration Window
Compare particle-size results across a stated concentration study before accepting one obscuration reading as a suitable measurement condition.
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Mie and Fraunhofer Particle Models: Identify the Optical Assumptions
Retain the scattering model and optical inputs before comparing two laser-diffraction reports as equivalent descriptions of one powder.
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Sieve Aperture and Mesh Count: Keep the Opening Dimension Explicit
Specify the sieve opening dimension and construction record; a mesh-count label alone does not supply every geometric quantity.
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Sieve Mass Balance: Retained Fractions Need a Recovery Check
Check recovered mass before normalizing a sieve result so that unaccounted material remains visible beside the retained fractions.
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Sieve Blinding and Agglomerates: Separate Two Causes of Apparent Coarse Material
Separate blocked sieve openings from retained particle associations before describing every coarse-looking result as large primary particles.
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