How a growler is used to test armatures

[@efektmurowany]

Thanks for explanation!!👍👍

[@norfolkairgunhunter5878]

Cheers for doing that. Great video 👍👌

[@TheGnarmedia]

Handy tool 👍

[@Quinnfix5268]

Where did ya come across the growler
Can’t seem to find one anywhere
Great work by the way