The full length neck of the E700 camera body is pressed hard into the rear adaptor neck and tacked with silicone adhesive or glue when fitted through the panel. They have an M12 x 0.5 thread in the front neck and are supplied with a 12mm lens tension spring. Fitting depth/focal length is 17.5mm to accommodate the E700 in its metal body, they are not designed for plain board cameras nor smaller M12 board lenses.
For more information about fitting them click onto this page: http://nightvisionforumuk.com/viewtopic.php?f=9&t=9998 for fitting instructions of a very similar adaptor with a different frontal arrangement for C mount lenses.
35mm lenses offer a wider often more practical field of view than the more common 50 mm lenses and are better suited for for rimfire and air range searching.
Price is £22 + £6 RMSD.
