This M42 to T-Thread adapter will convert universal screw mount lenses to fit T-threads. This is useful for attaching a CCD with T-threads to an M42 lens. Although most will require a short extension tube to reach infinity focus.
It will not let you use m42 lenses on your 35mm camera using a t-ring. Unless of course you want to do macro work. Since the m42 lens was designed to mount directly to a camera body, the adapter and a T-ring will move the lens forward and act as an extension tube. THis will allow you to focus much closer than the lens was normally designed to do. It has some interesting applications for Macro Photography, but know before you go. 8^)
I will put some examples in the picture shot with the 28mm m42 lens from the other ad.
$10 including shipping in the US. I prefer paypal, but can work with a money order as well.
Thanks for looking,
P.S. I am raising cash for the LX-200 sale, so check out all my other stuff, too!