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4 small daletin

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Magen Avraham 32:1: צריך לכתוב ד' דאחד כל כך גדולה כמו ד' דלתי"ן קטני' (כתבי האר"י). The dalet of echad should be large the size of 4 small daletin (in the name of Ari-zal). The MB 32:1 (in name of Pri Megadim): maybe this is not estimated by the script actualy used, rather if it has the size of 4 tiny dalet, it is sufficient. And therefore the custom is to write this dalet only larger than a regular dalet. This means that the custom wasn't to make the large dalet actualy 4 times a dalet in the script, only slightly larger. R. Menahem Dovidovitz shlita holds that the proper writing of this dalet (4 x dalet ktana) is done by doubling the size of the rosh to its height and twice its length, so it is equal in area to 4 regular dalets. My opinion is that this is not the meaning of the MA (Ari). The extending of the gag twice is not considered doubling the dalet, since the dalet once [its gag] becoming thicker must be also extended in order not to distort the tz…

Measure of [Square] Csav

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A continuation to a point I mentioned in my last post "shiyur moshav of the lamed" - the basic measure-unit in stam is a yud. But this unit may not be a exact square area – highth=width, since the width of the yud may vary, and will be fairly accepted at 0.7k, when the hight is always 1k – the oivei of the kulmus is the width of the line [gagei ha'oisiyos]. So a shiyur yud may be = 1kHigh/0.7kWide. In Alfa Beisa (p. 200, 205. Quoted in Darke Moshe, and Mishnat Sofrim) that the beis should be 3x3 kulmusim highth=width. This is built according to the measure of a standard yud, which is 1x1 kul. As the MS ois yud writes:  שיעור גופה מלא קולמוס אחד ולא יותר שלא תדמה לרי"ש  The guf of the yud is 1k, no more, so it won't resemble a reish. Obviously, the MS is speaking about the width of the yud, not its hight, because it shouldn't resemble a reish! (not a vav). Accordingly, the regular BY csav today is built on a structure of exact square, the yud 1x1k, the beis …