A US-made two-needle wattmeter

[W7TFO]

This is a really neat instrument.

Any idea what the end item was?

It works just fine, gotta' get busy with a project to use it.

73DG

[KM1H]

Based upon its sealed construction Id guess marine service or in an exposed non temperature controlled site as possible uses. I dont see any military markings.

Any idea of the movement specs?

[K5WLF]

I Googled the type number and got this:

http://www.nsn-now.com/Indexing/ViewDetail.aspx?QString=6625000895266

[W3RSW]

Very nice !
 It has perhaps 1 ma movements. I'd lash up the usual battery, voltage divider and vtvm circuit to find ohms/volt and use it with your favorite rf samplers in a very classy 2 kw transmitter. 

[w3jn]

I have that exact meter, but the glass is cracked.