A4B ANTI THREAD-OFFCOMPUTERIZED
Bottom thread clampping to antit hread-off while starting sewing
Jack brand new patent for bottom thread clamping, effectively reduce the probability of thread-off while starting sewing
Stepping motor control, presser foot heigtht adjustable
The height of the presser foot can be adjusted within the range of 0-13mm basing on the thickness of the fabric, saving time and convenience.
High precision stitch
stitch length can reach 0.1mm controlled by stepping motor. Stitch length adjustment function can be locked just in case operator's mis-operation.
Variable stitches, fashionable and beautiful
The height of the presser foot can be adjusted within the range of 0-13mm basing on the thickness of the fabric, saving time and convenience.
Tech specs
