pneumatic marking machine for metal name plate 1 Portable,easy to move 2 CE 3 Used online ... 24 hours technical Features: 1, The pneumatic marking machine for metal name plate serial number is automatically incremented and the value optional ... 1mm adjustableMarking Dirctionup,down,left,right,circle Marking Characterssizes,spacing for adjustment,character size covers 2-80mm,even bigger Impact frequency ...