GD&T tools in CAD

- [Instructor] In most popular 3D Solid modeling programs,…basic dimensioning tools can be found…in the default menus and toolbars.…These tools allow the designer…to assign dimensions to geometric features…and to find the sizes of the parts they create.…In most cases, these dimensioning tools give the designer…the ability to find the precision of a given dimension,…which is shown by the number of digits…to the right of the decimal point.…In addition to setting the precision of a dimension,…a range of tolerances can be assigned…to the dimension value.…

The addition of geometric dimensioning and tolerancing tools…to 3D modeling programs is a somewhat recent phenomena.…Software commonly found…in high-volume manufacturing environments…began to incorporate GD&T notation early on,…in order to meet the documentation requirements…of their customers or regulatory agencies.…CAD programs found in less strictly controlled environments,…like schools or small design shops,…have only recently introduced GD&T tools…into their dimensioning tool set.…