Vtg Brass Twin Diaphragm Doppeldose Ships Barometer, Made In Germany not working

Description

Vintage Brass Twin Diaphragm Doppeldose Ships Barometer, Made In Germany Not working
Condition: Pre-owned
A great display piece. This item is in very good condition with some wear,
for Repair or not working
I don't know what is wrong with it
This will made a great decoration piece
Notice is missing a couples escrows see last pic.
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