A. Thread guides

E. Stitch Length Regulator

I. Power Switch

M. Feed Dogs

B. Spool Spin

F. Stitch Width Regulator

J. Presser Foot

N. Needle

C. Bobbin Winder

G. Bobbin

K. Presser Foot Lifter

O. Thread Take-Up

D. Balance Wheel

H. Foot Control

L. Throat Plate

P. Upper Tension Regulator