ISO GPS Learning from Beginner to Star - Based on ISO GPS

Explore flatness and straightness, their tolerance zones (lines), and why flatness has no datum. Learn to measure with touch or CMM on surfaces, medium planes, or median lines—sampling as needed.

Explore circularity and cylindricity as form tolerances for cylindrical features, using intersection views and a profile projector to ensure points lie within concentric tolerance zones.

Explore the offset zone (OJ) in ISO GPS, compare it with cylindricity and profile tolerances, and learn how the offset zone controls form deviation for irregular and cylindrical shapes.

Explore profile tolerance with and without datum in ISO GPS, detailing how it controls the top surface relative to datum A within a 0.4 tolerance zone and measurement reporting.

Learn how basic dimension defines the nominal and true position of a profile, using 3D mass data or 2D information, and how datum A and datum targets guide measurement.

Explore how to apply the unequal bilateral profile tolerance in ISO GPS to control deviation outside or inside the material, ensuring gaps and preventing interference in assemblies.

this lecture contrasts plus-minus and profile tolerances, explains datum selection and measurement methods, and shows why position control should use profile with a datum rather than plus-minus.

Explore feature of size and regular shapes like pins, holes, and slots, define maximum material condition and least material condition, and explain their impact on assembly and position tolerances.

Define position tolerance and its cylindrical tolerance zone referenced to datum a, b, c around the nominal position; compare median line and axis, and measurement with cmm.

Understand how datum a, b, and c define the position tolerance by constraining the part’s six degrees of freedom and how changing the datum sequence alters measurement.

Explore how bonus tolerance uses MMC and LMC modifiers on position tolerance, enabling allowances in assembly with datum ABC and M8 bolt, and learn when to apply and gauge it.

Explore virtual condition boundary and maximum material condition in gauge design for position checking, including calculating gauge pins from hole minus position tolerance and using datums A, B, and C.

Explore position tolerance without datum and profile tolerance without datum, and learn multi-segment feature control frames to manage hole patterns with datum A, B, and C.

Learn pattern control in geometric tolerancing using CC, SC, UDF, and CIM to group or separate features, including SJ and united feature concepts from ISO 5558.

Learn how datum shift under ISO 1101, ISO 2692, and ISO 5459 adjusts position tolerance with MMC and LMC, using gauges and cautioning against treating datum shift as a bonus.

This module explains parallelism, perpendicularity, angularity, and their relationship to datum A, showing how tolerance zones control orientation and rotation, with profile and position as alternative controls.

This lecture explains how the orientation only indicator in ISO GPS controls axis orientation to datum A and shows how profile and position tolerance replace parallelism, perpendicularity, and angularity.

Explore how profile tolerance controls position, orientation, and form relative to datum A. Understand how parallelism and flatness are constrained within that profile, with parallelism always smaller than the profile.

Explore concentricity and symmetry in ISO1101, showing how tolerance zones and datum A control center alignment and how position tolerance relates to these concepts.