Stitch-regulated Gammill Optimum Plus capabilities:

• Sense change in speed which results in even stitches
• Can be run in conventional mode
• Includes a vertical and horizontal channel lock
• Two station needle positioner
• Security and basting stitch
• "Stop sew" sensor
• Low-bobbin alert

Non-stitch regulated Gammill Optimum capabilities:

• Set the speed with a dial
• Will sew at the constant speed you set
• Electronic needle positioner
• Horizontal channel lock
• Vertical channel lock can be added