Struthers 1219 SWR meter. Looks unused down to the packing strap on the meter internally. Had to buy it once I figured out what it was.

Image #0 of 1
Taken 2010:11:09 20:50:07
Exposure: 1/15 F2.8
Flash: Flash did not fire, auto mode
Focal Length: 3.85mm
iPhone 4