Might be a dumb question, but I can't see how this thing works.
in the scubatools website...p-591-mouthpiece-adapter-assembly-acetal
SKU: 26-300-400
Is there a hole in the back the attachment so you can put your mouth up to it and take a breath to see the cracking pressure on the guage?
I would assume there has to be.. but by looking at the photo.. i don't see one..
in the scubatools website...p-591-mouthpiece-adapter-assembly-acetal
thanks for the help
Rich
in the scubatools website...p-591-mouthpiece-adapter-assembly-acetal
SKU: 26-300-400
Is there a hole in the back the attachment so you can put your mouth up to it and take a breath to see the cracking pressure on the guage?
I would assume there has to be.. but by looking at the photo.. i don't see one..
in the scubatools website...p-591-mouthpiece-adapter-assembly-acetal
thanks for the help
Rich