Baby Lock Maria (Previous Model) (BL23A) Instruction and Reference Guide - Manual (Page 37)

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• Reverse Stitch Button
As long as you keep the reverse stitch button
depressed, the machine sews backwards.
• Seam Guide Line
The numbers on the needle plate indicate the
distance between the center needle position and
the line.
The numbers in front are millimeters.
The numbers in back are fractions of an inch.