The Scribe marking machine is called 90 x 80 mm Marksman by Jeil MTech. The Scribing head, SI-120, has a special ball screw head that is capable of scratch marking. This marking head is best suitable for noiseless work.. It is possible to mark precise marking as minute as 1mm. The quality of the SI-120 head is much better than other marking heads. The case of the SI-120 head is made of steel which is why it is light and installation is easy.