Military AN/URM-120 Watt/SWR Meter. This meter is working and includes 4 slugs.
The 25 to 250 mHz slug is reading low. It may need alignment or it has a problem.
The other slugs are all fine. Considering the 25 to 250 Mhz slug as unusable the
present usable measuring spectrum would be 2 mHz to 1 gHz, less 30 mHz to 144
mHz.