Inline Power Meters for Computer Server?

Does anyone make a very small power meter for a computer server that will give me a constant spot reading on the power being used at the server (a
simplistic calculation of watts is fine). I found something similar to this here:
http://www.e-fliterc.com/Products/Default.aspx?ProdID LA110
But the problem with this is it is a wire on either end and I'll spend as much to create a custom cord for it as I would on the meter.
Ideally the device in question would expose a standard plug type on one side that could be adapted to the server, and a standard plug type on the other side of the meter that would go to the power distribution unit.
I would put these on dozens of servers and computers, and they would just be a handy way to get a spot reading on energy when working behind the servers.
I am NOT interested in large power distribution units with built in power measurements. I'm not trying to measure the power consumption of the entire power distribution unit (I already have that). I am trying to get spot readings on individual power supplies of individual servers, without having to hassle with logging into web interfaces or documenting every plug position on the PDU.
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W



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W-
Take a look at the P3 International "Kill A Watt". It plugs into a standard 120 VAC outlet, and has a female outlet on its front. It reads Voltage, Current, Watts, Volt-Amps, Frequency, Power Factor, Kilowatt Hours and Elapsed Time.
<http://www.p3international.com/products/p4400.html
It should be less expensive than the one you found. You may find them on E-Bay, as well as at other on line dealers. At one time they were sold at Radio Shack.
You would also find one handy if you have an emergency power generator.
Fred
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