Miniaturization demands tight controls. When designing a smartphone casing, an engineer uses JIS B 0024 to dictate that the distance between screw holes (location tolerance) is independent of the thickness of the plastic (size tolerance). The "Feature Principle" in JIS B 0024 clarifies that every "feature" (hole, pin, plane) must be defined against a "datum" (reference point), ensuring repeatable assembly in automated factories.
The standard was originally established in 1988 and underwent a major revision in 2019 to align with modern Geometrical Product Specification (GPS) systems. Key Principles of JIS B 0024 jis b 0024 pdf high quality
"That’s big for a text document," Elena noted. Miniaturization demands tight controls
Trusted international distributors that offer clean, licensed digital PDF downloads of standard documents for engineering firms. The standard was originally established in 1988 and
Focused specifically on the "Fundamental Tolerancing Principle". The "Principle of Independency" The most vital concept defined in this standard is the Independency Principle JIS B 0024: Tolerancing Standards Guide | PDF - Scribd
To ensure you are using the correct and official 2019 revision (which replaced the older 1988 version), it is essential to source the PDF from reliable providers.
] If a cylinder needs to be perfectly straight to fit a bearing, ensure a straightness or cylindricity tolerance is explicitly added (since size limits won't control it).