Portable handheld sewing machine labeled with its key external components and their basic functions.
Core Components and Functions
Set Screw: Adjusts the height of the needle mechanism up and down manually.
Tension Control: Dial used to adjust the tightness of the upper sewing thread.
Thread Hole: Guide hole that keeps the upper thread properly aligned before it reaches the needle.
Bobbin Holder: Spindle that secures the thread bobbin supplying the bottom thread.
Presser Foot: Holds the fabric firmly against the feed dog underneath while stitching.
Rotary Wheel: Manual dial used to lift or lower the machine's inner splint mechanism.
Power Switch (Safety Lock): Sliding or push-button mechanism to turn the device on/off and lock it securely.