1. 
   Megger
   Test meter used by electricians
   Found op http://www.fmb.org.uk/find-a-builder/helpful-advice/jargon-buster/?locale=e
   
   
2. 
   Megger
   A colloquial term for an insulation tester used by electricians (short for megohm-meter).
   Found op http://www.interbuilders.co.uk/glossary/m/megger.html
   
   
3. 
   megger
   1) Test meter used by electricians
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/megger/1
   
   

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