I bought this SinarSix light meter as part of a Linhof Technikardan 45 set.

I put in new batteries in it and it came roaring to life, but I have no idea how to use it, despite repeated tries, and reading whatever literature I could find on it.

Can anyone explain to me how to use this, step-by-step, in simple terms?

I've included a picture of said device below.

Any help would be very much appreciated!

Click image for larger version. 

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