RK31 Artillery Aiming Circle J.D.Moeller Wedel With Case small The bottom text translates to

The bottom text translates to "first aid for dealing with Russians"

The two supplemental shoulder straps appear to also be made from some type of British canvas gear which leads me to believe that they have likely been with the rucksack the whole time

It looks to be for digestive issues

These were basically cough drops

Main box not included

RK31 Artillery Aiming Circle J.D.Moeller Wedel With Case small The bottom text translates toOriginal pre war RK31 aiming circle with an original leather case. The optics are clear, the levels are working, the compass points north (and south) and everything turns freely and smoothly. There is some wear in the paint, which you can see in the photos, and the leather case is in pretty good condition, even if it shows its age a bit. Its been around the block a few times and can do it many many more. An all around good example. This would have