1) Kıyye, is another name for Okka. See: http://tinyurl.com/yhhox5
The link you gave also confirms this, search for either Okka or Kıyye in that page.
And here's the English Wiki page for Okka=Oka: http://en.wikipedia.org/wiki/Oka_(measure)
I don't think Chai is the same thing, but cannot be sure, of course.


2) Cheky=Çeki seems right to me.


3) Cheray: Kırat=carat or karat, see this dictionary link:
http://dictionary.reference.com/search?q=carat
if you scroll down the page, you'll see that the English carat/karat is a derivation of the Arabic "kırat" - and so is the Turkish "kırat", which probably served as the bridge of this derivation. Besides, even if the *t* at the end of the Arabic word is the silent t, I don't think it would've been transliterated as a *y*.


I am not convinced that either of the two below could be your Cherai, but still it might help to take a look:
http://tinyurl.com/ycowed


There is Zerre, the smallest unit of weight (which looks and sounds -to me at least- more similar to Cherai than Kırat)

And there's Dirhem-i Şer'i, which means the canonical dirhem used for religious sort of measurement (as opposed to Dirhem-i Örfi, the secular dirhem), like for instance, used in measuring the weight of wheat to be allocated as Zekât (money or goods given out for charity, considered a religious duty). Perhaps your Cherai is a transliteration of this Şer'i, but a remote possibility, I admit.








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Note added at 3 days22 hrs (2006-10-22 08:20:32 GMT)
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Re. "Batman de Chahi, or Cheray"

If the "chahi" and "cheray" are synonymous here, and if "chahi" means royal, then it somehow makes sense. Because "chahi" in the sense of royal is obviously the same as "shahi", related to "shah"; and "cherai" *may be* a slightly corrupt transliteration of "saray", which means a royal court. In various Western European languages, this word has been transliterated in forms like "serai", "cerai", etc. (The "seraglio" in Mozart's opera is again the same word.)

1 batman = 6 okkas = 7,692 kg.
according to this link: http://www.denizce.com/hafta0529.asp