Found this mic in an old fellows tool crib. Was solidified. Said could have it. Has sharp points where you measure. Soaked in aerocroil overnight. Still frozen, got barrel off and warmed up with small heat, completely disassembled, now is running good. Able to set “0” very smooth. I think some type of thread gauge maybe?? Only goes to .000 no veneer scale for .0000
Sent from my iPhone using Tapatalk