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Tag: True Position

Using a Complicated or Curved Surface as a Datum

by Tom Geiss on June 11, 2020.

In this question line video – Tom discusses how to understand a curved profile surface as a datum for 4 holes that are required to remain normal to the irregular surface. How do we do this with profile and position and what do we use as the datums? We talk about a lot of very advanced concepts here so make...

GD&T Position

True Position

by GD&T Basics on December 22, 2014.

Position is one of the most useful and most complex of all the symbols in GD&T. The two methods of using Position discussed on this page will be RFS or Regardless of Feature Size and under a material condition (Maximum Material Condition or Least Material Condition). Position is always used with a feature of size.