Yes, that's a Pilot magnifier. My TV-37 article has a couple of photos that I found somewhere.
The magnifier on my Pilot is an aftermarket item -- possibly home-made -- that stands on little legs that slide under the TV:
So I guess there were aftermarket magnifiers for that set, as well as factory ones. A rare item in either case.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html