WHITEPAPER · ISO-GPS · 2026

Why your 2008 drawing
today produces scrap

With the introduction of ISO 8015 as a general tolerancing principle, the meaning of your dimensions has fundamentally changed – even if the drawing looks visually identical.

Why identical drawings are interpreted differently today
Which standards no longer apply since 2021
What GN, LP, and Ⓔ mean in practice

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WHITEPAPER · ISO-GPS · 2026

FROM FUNCTION TO INSPECTION REPORT

Why your 2008 drawing produces scrap today

BEFORE · 2008

Implicit envelope condition

✓ Part assemblable

AFTER · SINCE 2011

Two-point dimension as default

⚠ May not be mountable

Whitepaper Overview

4 topics you need to know today

The most common sources of error in industrial metrology – explained in detail.

Principle of Invocation

One symbol is sufficient – the entire standard system applies

Ambiguous Dimensions

Radii, Chamfers, Distances – not clearly verifiable

New General Tolerances

ISO 2768-2 withdrawn – ISO 22081 applies

Duality Principle

The best measuring machine won't fix a bad specification

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From Function to Inspection Report

2-day practical seminar in Roding
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Instructors: Marcus Grella & Reinhard Kerscher

✓ Confidently read drawings✓ Master modifiers✓ Develop inspection strategies

Why your 2008 drawingtoday produces scrap