Signograph 25 set electric engraver engraving is as easy as writing a powerful engraver with interchangeable hardened stylus and hard metal stylus vibration strength a peak 74 02 ms 7 545 g peak value a rms 52 34 ms 5 336 g rms valueroot mean square value in colourful display packaging cable length 2 m cable h05vv f 2x0 75 plug bs plug