Front control panel and view of the inside.
Note the Geiger-Müller tube on the bottom of the
inside picture.
Housing is cast aluminum with gasket between halves.
View of meter and external battery tube.
This appears to be an "arctic kit", similar to the one
used with the AN/PDR-27T, to keep the batteries
warm when used in extreme cold weather.
Original owner states this was made between 1970 - 1980
This model works and will detect a thoriated lantern mantle.
External Probes and
holder for the IM-3004 (these are not in my collection)