T&T: Portable watt hour meter?

[Keith]

I would like to double check my marina's watt hour meter that's on my power
post. Ideally I would like a meter that would plug into a 50 amp 125/250
outlet with the same outlet, or split to two 30 amp plugs. I could also use
two of these designed for 30 amp power cords. I found the latter, but
they're $250 EACH.
http://www.powermeterstore.com/index.php?page=customize&products_id=5650

or

http://tinyurl.com/d3n64h

Any other ideas / suggestions?


Keith
_____