... whicle M602B is 300mm*300mm*80mmDescription: Inner engraving of 2D3D graphics, characters, images on transparent material like crystal, glass. ... glasses.Main function: engrave plane or 3-dimensional solid graphics inside crystal, glasses and other transparent materials. Can engrave ... is very fine and bright, engraving speed is higher, graphics more precise, lifelikeness and reality;2. Key elements are ...