White 1927 manual IciIthickness, Length, Determine Width

6.MAKING	BUTTONHOLES
Set machine	as shown.

Determine			Length
Measure		diameter		and thickness
of	button	and	add	0.3cm (1/8”)
for
	bar tacks.
Mark buttonhole size on material.

Determine Width
Determine				width	according		to
diameter			of	button,	its thickness,
and kind			of	material.
Attach buttonhole					foot.
Completely push back sliding							part
j	of	buttonhole foot.
Place		material under foot				so	that
marking			of	buttonhole		passes
through center of foot and arrow
Jj)	of foot indicates				beginning		line
of	marking.

-J

		N
		marking
		3cm(1 /8”)
length	of a	diameter
buttonhole
iF		IciIthickness_

marking

—23--