T&T: Multimeters

[Joel Wilkins]

Hey all...
  Can anybody tell me in laymans terms what the real usefulness of a "True RMS" multimeter is as compared to the other nonRMS meters for boat use? I ask this in light of the fact that 90% of my measurements are voltage and of that prob 75% are DC. It is my understanding that RMS is really only useful for measuring AC Current. 
   
  I am in the market for a new digital since my dog managed to knock my old one in the drink. I have always had very simple (read cheap ~$40) meters which have done everything except clamp on current. I know Fluke is a quality name but true RMS and clamp on starts getting $$$ real quick. Sears (Craftsman but who knows what brand they really are) sells what looks like a very nice meter. NonRMS, clamp on AC and DC current and temp probe fopr abt $80- 15% sale for Fathersday
   
  Thanks
  Joel Wilkins
  m/s Miss Magoo
  C-45, #98
  S. Pasadena, FL
   
   

       
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