Subclasses
x x
x
x
x
x
x
x x x x x
x x x x x
x x x x x
x x x x x x x x x x x x x x x x x x x x x
x
x
x x x x
x
x
x
x
x
x
x x o o o
o o o o
x x x x x x x x x x
x x x x x x x x x x
x = Optional equipment
o = Standard equipment
x x x x x x x x x x x
x x x x x
x x x
x x x x x
x x x x x
x
x
x x x x x x
x
x
x x x
x
x
x
x x
x
x x x
x
x
x o o
x x x x x x x x x x x
x x x x x x x x x x
x x x
Keystone Sewing Machine Company, Inc.
x x x x
x x x x
x
x x
x x
x
x x
x o o o
x x x
GB
15