The DL-1 is a simple device designed to cast light through the meter-needle illuminating window on top of Photomic prisms. It attaches to the eyepiece via the threaded mount, and has two controls, on (on the side) and off (on the top) which operate in the same way as the Photomic FTn's on/off: pressing the "on" button into the DL-1's side pops the "off" button out, and vice versa. It is powered by a single 625 1.5volt alkaline battery.
Good condition, comes with battery.
