# UCUM units of measurement in Archetype Editor

**Category:** [Implementers (archive)](https://discourse.openehr.org/c/implementers-archive/158)
**Created:** 2011-04-18 09:14 UTC
**Views:** 8
**Replies:** 0
**URL:** https://discourse.openehr.org/t/ucum-units-of-measurement-in-archetype-editor/14007

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## Post #1 by @Leonardo_Moretti

Archetype Editor let's to specify the list of units of measurement for a DV_QUANTITY element (C_DV_QUANTITY constraint). Not all the UCUM units of measurement are selectable from Archetype Editor. For example [MET] (metabolic equivalent) is defined in UCUM specs ([http://aurora.regenstrief.org/~ucum/ucum.html#para-44](http://aurora.regenstrief.org/%7Eucum/ucum.html#para-44)) but I didn't find it in Archetype Editor.
Using Archetype Editor, how can I define a DV_QUANTITY as [MET]?

Thanks
leonardo

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**Canonical:** https://discourse.openehr.org/t/ucum-units-of-measurement-in-archetype-editor/14007
**Original content:** https://discourse.openehr.org/t/ucum-units-of-measurement-in-archetype-editor/14007