Offered is the big Westinghouse Voltmeter marked "FILAMENT". The meter is marked off 0 to 10. It has a heavy pressed steel case with a nice chrome flange around the meter itself.  The meter face is 4 3/4 X 2 1/2 inches in size.  Printed on the meter face is the following: Type HA25 (MA25), Style 1058809-A and Ser. 2229991.   The pointer moves freely when the case is gently rocked. Briefly Variac-Tested, the meter deflects smoothly. There are (4) terminals on the back and some kind of shunt arrangement may be necessary for hookup.  Overall dimensions: 6 1/2 X 6 1/2 X 5 inches. Mounting is via two threaded rods located on the back of the shiny flange-one at the top edge and one offset at the bottom-visible in the photos. Pick up the nice Filament Meter for your own project or replacement use. Untested except as noted above. Offered "as is" due to age. From the radioman's estate parts boxes-from a smoke and pet-free workshop. Mouse over the photo images to zoom in. NO RESERVE!! Thanks for looking.