Groovy founder Guillaume Laforge built on top of the Java standard proposal for type safe Units of Measurements, JSR-275 with his case study of a Domain-Specific Language for unit manipulations some while ago. Based on Unit-API the successor to JSR-275, and its leading Open Source implementation Eclipse UOMo together with Xtext/TS we'll see, how a similar DSL for unit manipulations could be created with Xtext. As well as other languages including Groovy or Scala.