Posted by Willy-N [72.171.192.62] on Wednesday, September 23, 2015 at 13:43:39 :
In Reply to: Re: Air Lock Picture posted by Willy-N [72.171.192.62] on Wednesday, September 23, 2015 at 13:28:40 :
In case you are not sure what one is here is a picture of one. The shaft is flexible and you just put it against what you want to detect movement.
