grammatical number - What is the plural form of: unit of measure

So, basically I want to know, how to pluralize the phrase Unit of measure

I have a group or collection of unit of measure like liter, micro-liter, kilo, etc and I want to given to that collection a correct title.

Is Unit of measurements correct? or Unit of measures?

Answer

The whole batch of them constitute units of measurement. The prepositional clause would have a different meaning if rendered of measurements (referring to multiple actions of measuring), so there is no choice for the plural of unit of measurement.