@@InstrumentCalibration hihi thanks .. althought long time did posted a video . And also that i did my passion.. A big move out/ house crisis overhere made it a bit hard for me . But its getting better , as i ve got my job as a CALIBRATION ENGINEER secure 🤩.. And i coulant do this , if i didn't found this channel ☆☆☆☆☆ ! The short condensed video's, i got to pause every 15 sec or so ..lol Are full of relevant information to realy refress in my case , or to realy study , for the job. Thanks alot and very greatfull Grtz from the netherlands Johny geerts