As Wersi OAS instruments ceased production in 2014 (Replaced by the current OAX instruments), I have noticed that the English versions of the OAS manuals no longer seem to be available online, therefore I have uploaded copies of mine to Box, (Link Below) so that anybody that purchases an OAS instrument used, will be able to find out how to get the best out of them.
Also included is OAS History for those that are interested.

Enjoy

Bill

https://app.box.com/s/ooyl9ybklt31u5kyyljd1aovybkn8m5n