Meters and liters
I believe the answer is:
units
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">meters and liters</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for units that I've seen before include "military teams" , "Apparatus similar to barbecue" , "Single items or standard quantities" , "Figure on the right" , "Detachments" .)