Armscye Depth
I find it interesting that this particular text recommends adding 2-3cm to the depth of scye. Most texts I own do not say to do this, and add the depth of scye as measured directly to the draft.
Most textbooks don't bother to mention what happens to the scye during the making up process. However, in the case of Devere 1866, he adds the depth of scye directly to the draft without room for seam allowances or added ease. He does make it clear that stretching of the front of the scye during the making up will stretch the circumference of the scye by 3/4" (1.9cm), which should add a little ease to the armscye. Die Zuschneidekunst has one diagram in which the front of scye is fulled (clearly marked "einschränken") rather than stretched, in which case more ease may have to be permitted on the draft.
Another point is that the depth of scye as measured from the front going from neck point to the base of arm scye is often called the "strap".
This is how the strap measurement is taken (from a to b):
A ruler is held jammed up horizontally underneath the armpit, and a tape measure is held tight from the neck point to top edge of the ruler measure going from a to b.
In order to apply the strap, the half width of back neck seam has to be subtracted from the strap. This measure is marked from B to W on the following draft:
The strap measure can then be applied. The full strap measure goes from W to point X, but the depth of scye goes from B to X:
I hope "a tailor" doesn't mind me borrowing his diagram (he borrowed mine too). Slightly modified version of the one posted here:
http://www.askandyaboutclothes.com/foru ... post859554
This is the other way of measuring armscye depth measuring a to b from behind:
To measure this, a tape measure is held under the armpits across the back. A chalk mark or pin is placed to mark where the top of the tape measure intersects the centre back seam:
Measure from the neck point to the mark:
Next, is the question of whether to use the strap measure or the arm scye depth from behind to determine the armscye depth on the coat. This usually doesn't matter that much, unless, during the making up, the neck point is going to be crookened as shown in the next diagram. The "correct" neck point is 9 1/2" from point "0" (top right). However, in figure 5, the coat is cut too straight and the neck point needs to be manipulated ("crookened") from the 10 1/4" mark to the 9 1/2" mark.
Notice that the strap measure has been applied to determine the depth of scye. The strap is less liable to be changed significantly by manipulation of the neck point than is the depth of scye measured from behind.
Personally, it is my belief that measurements should be taken in more than one way, if possible. Taking multiple seemingly redundant measurements helps to improve accuracy. That's why I like the idea of adding a depth of scye measurement from both front and behind.
Next time I will discuss Devere's system of measurement - even though I risk being thought of having an obsession with his book
. He has another way of double checking a lot of measurements but the fundamentals of his whole system have to be explained.