ISO 8015:2011 - Geometrical product specifications (GPS) — Fundamentals — Concepts, principles and rules. ISO 8015:2011. ISO 8015: ISO - International Organization for Standardization A Comparison of GD&T Standards: ISO GPS vs. ASME Y14.5
is the bedrock of the International Organization for Standardization’s (ISO) Geometrical Product Specification ( GPS ) system. It establishes the fundamental concepts, principles, and rules for creating and interpreting technical drawings. In the world of mechanical engineering, this standard is critical because it defines how dimensional (size) and geometrical (form, orientation, and location) tolerances interact. The Core Principle: Independency tolerance iso 8015
Unlike the ASME Y14.5 standard (which defaults to the Envelope Principle/Rule #1), ISO 8015 does assume that a part must fit within a perfect envelope of maximum material size. If the designer wants the size tolerance to control the form, they must explicitly indicate this using the Envelope Requirement (symbol Ⓔ) . ISO 8015:2011 - Geometrical product specifications (GPS) —