[Boatanchors] AN/URM-120 Military Wattmeter

[Ron Trepka]

I have excess to my needs a replacement meter for the AN/URM-120 wattmeter.
This particular one was made by Sierra but others made this unit for the military as well.

The meter itself is linear in scale meaning that half scale reads half of full scale. and needs to be used with a square law detector.  Scales are  0 to 10 and 0  to 50 WATTS and is used with the instrument detection elements to read the 10 , 50 , 100 and 500 watt as well as other scales.  The meter is a 25 uA type and reads EXACTLY as my meter that is in my wattmeter.  Hole size is 2.75 inches

I will trade it for a similar size meter that reads 0 to 50 and 0 to 150 with half meter scale reading 1/4 of full scale  for use in a dry dummy load or sell it outright for $25 + shipping.
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w8ron