What are these discs?
So I visited a buddy in Florida last week and his neighbor and I got to talking about ww2 and he said he had acquired these discs from working overseas. He really wasn't sure what they are and neither do I. I believe they might be for elevation on an artillery gun but not sure. They have nazi markings and looks to be from the third reich. Can you gentlemen help me out.
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"the lost secret decoder rings for the location of the Arc of the Covenant" 0 -
The marking with the letter "M", is German Navy. I use to own a Model 1934 Mauser with the same marking. 0 -
If I were making a wild guess, it would be part of an aiming device to some sort of artillery with a muzzle velocity of 785 meters per second. 0 -
This is the closest data I can find for German 105mm Naval guns. Although the barrel length given is 45 not 44, as marked on the disc.
http://www.navweaps.com/Weapons/WNGER_41-45_skc06.htm0 -
Search for 10.5 cm Spgr L4.4 marking turned up this;
http://www.lonesentry.com/ordnance/10-5-cm-flak-38-39-multi-purpose-gun.html0 -
Looks like the discs that went in some of those WWII ballistic calculators for big guns (usually naval guns). They help calculate drop and windage at various ranges and speeds. You can see an indexing hole near the middle that would clock it to the hub on the calculator 0 -
They were sort of a slide rule sort of tool, but they had clockwork, cranks, and dials for the input and output 0
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