Yashica MG-1 Battery Adapter (1x5,6v Mercury to 4x1,5v Alkaline)

The Yashica MG-1 is a great Camera you can get
for a really great price.
Sadly it's using a battery that's no longer beeing produced due to it containing mercury.
This adapter allows you to use a stack of 4 1,5v alkaline batteries instead of the prohibited 5,6v mercury battery.

all you need besides this adapter is a spring from an old pen and the
new batteries.

(I will soon upload pictures explaining how to use the adapter)