White 1927 Instruction Book page 30

Left and
Right
Side
Balance of Buttonhole
Stitch density on right and left
sides of buttonhole can be adjust
by buttonhole balance control
dial
This dial should usually be in a
neutral position (between
"+"
and
If the stitches on the right side of
the buttonhole are too close
together, turn the dial to the left
(+).
*Turning dial to left opens right
side and closes left side.
If the stitches on the right side of
the buttonhole are too open, turn
the dial to the right (—).
*Turning dial to right closes right
side and opens left side.
4
+
=
>
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