All dimensions mean numbers of the scale, unless specially called inches or referring to the size.
All scales are one-half breast or one-half seat, and two and one-half inches, divided into twenty even parts. The two and one-half inches addition to the one-half breast or seat measure makes the small sizes large enough and the large sizes small enough for all purposes.
Take the breast measure over the vest for both undercoat and vest.
The circumference measure of the breast and seat must be taken tightly over the vest and pants. The breast measure is to be taken with the tape touching the extreme point of the shoulder blade, with the lungs empty. The seat measure must be taken over the largest part of the seat, which is about three to three and a quarter above the fork or junction of the legs.
The half coat as well as the half pants take up about one and a fourth inches for seams, leaving about one and a fourth inches slack for other purposes on the half garment. This measure is to be taken with a small tape, and all the diagrams are calculated accordingly.
In taking a measure around the human form, there will be found a difference of from one and one-half to two inches between a narrow tape and a strip of cloth ten inches wide. The narrow tape cuts deeper into the flesh, and therefore will record less surface measure than a strip of cloth ten inches wide. If we take a narrow tape and a strip of goods, say ten inches wide, and with both measure over the seat or chest, drawing one as tightly as the other, we will find that the broad strip will record about one and a half inches more on the whole circumference. Now, if the broad measure gives three-fourths of an inch more over the half breast than the narrow tape, then it follows that, after sewing seams, there will be left half an inch on the half frock coat only for expansion of the lungs and the movements of the arms.
The same is true of the pants, and though they require nothing for expansion of lungs or movement of the arms, yet it requires a certain space for expansion while sitting, for it will be found while a person is in that position his seat, hips and waist will expand anywhere from one to five inches, but the waist will expand the most. The seat, hips and waist require their circumference measure while sitting—nothing more nor less—and, consequently, seams must be added to that measure, and must be applied at the point which I have termed “the seat line,” as shown in Dia. [XIV.], and on the back on the upper line. If stitches are drawn in, on that line, it will be found that when the pants are on the body said line is a horizontal one all around, and at the largest part of the seat.
A large and fleshy person, particularly one with an extra large abdomen, cannot be fitted with the old maxim, viz.: Make the half-waist one-half the measure and add three-fourths of an inch. This usually holds good as to persons with small waists, who do not spread much in sitting, but when a large-waisted person, who perhaps weighs 250 to 300 pounds, assumes such a position, his legs will press his stomach upward, decreasing it in length and expanding it in circumference. There may be persons with sole-leather stomachs who can stand any pressure for a short time, or while taking a meal, but when compelled to sit most of the time, they want their pants large enough to be comfortable while in that position. It is true, such pants must hang loosely while standing, and must be supported by suspenders, but this difficulty cannot be overcome.
This work takes the seat measure as a guide to select a scale, no matter if the hips are larger or smaller than the seat; nor if the waist and hips are larger than the seat, proper allowance must be made there. And it should be observed here that whenever the hip measure is larger than the seat measure, it may be concluded at once that said large hip measure is caused by the unusually large abdomen directly in front.