Duerkopp Adler 540-100-1 Operating Instructions Manual page 29

Characteristics
First bartack
Final bartack
Leading buttonhole
seam
Trailing buttonhole
seam
Buttonhole width
Cut length
Cut length
Intermediate material
width
Throw width
Stitch distance
Length in front of the
cut
Length behind the cut Distance between the final bartack and the cut
Leading and trailing
buttonhole seam
Buttonhole width
= Bartack width
Bartack
Buttonhole length
First bartack to be sewn in connection to the
leading buttonhole seam
Final bartack in connection to the trailing
buttonhole seam
Buttonhole seam from sewing start to the first
bartack
Buttonhole seam between first bartack and
final bartack
Distance between the outer stitches of a
buttonhole
Length of the knife's cutting edge in mm
Length of the buttonhole to be cut in mm
(=Buttonhole seam length)
Distance between the inner stitches of the
leading buttonhole seam and the trailing
buttonhole seam
= Buttonhole seam width
Distance between double stitches in the y-axis
Distance between the first bartack and the cut
Leading buttonhole seam is symmetrical to the
trailing buttonhole seam with the cut length as
symmetrical axis.
The setting "buttonhole width" automatically
gives the bartack width. The bartack width can
be altered with the corresponding parameters
"offset l" and "offset r" in the bartack menu.
The final bartack length is the same as the first
bartack length if both bartacks are identical.
The bartack length for both is set in the menu
"First bartack".
The complete buttonhole length is determined
by the cut length + length in front of the cut +
length behind the cut + first bartack length +
final bartack length.
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