Ritter Meteor X Dual Range
Model R X-Rays

There were seven type's of the Model R X-Ray.  The R-1, R-2, R-4, R-1A, R-2A, R-1B and R-2B.  The front panel shown on the left may not necessarily look like the model you are working on.  The most distinguishing feature with the Model R X-ray is that they all had a key switch on the front panels.

Ritter Meteor Dual Range
Model L X-Rays

There were four type's of the Model L X-Ray, the L1, L2, L3 and L4.  The front panel shown on the left may not necessarily look like the model you are working on.  The most distinguishing feature with all Model L X-ray is there is no key switch and most of them have a timer select meter as shown.

Ritter Explorer II
Model P X-Rays

There were Two type's of the Model P X-ray.  The automatic head select and the manual head select. The most distinguishing feature with all Model P X-Rays is the key switch and a rotary Knob for the KVP selection.

Note:   Many master model P controls were wired to Model J remote stations.  They look very similar however the Model J remote station has no key switch.

Ritter Explorer
Model J X-Rays

There were seven type's of the Model J X-Ray.  The most distinguishing feature with all the Model Js is the black pushbutton KVP selector under the timer dial and it has no key switch.

Note:   Many master model J controls were wired to Model P remote stations.  They look very similar however the Model P remote station has a key switch.

Ritter Mark 75
Model H X-Rays

There was only one of the Model H X-Ray.  the different time settings were changed by two rocker switches and a density control knob.  There were no multi headed capabilities and no remote station.