The L-208 Twinmate is a compact ambient photographic light meter which will measure either reflected or incident light. The reading is shown by a matching needles and referencing a rotating dial which displays the available shutter speed and apertures. The hatched section under the needle indicates the 33° reading angle of the meter. It includes a shoe mounting plate to allow it to be mounted horizontally on the top of a camera flash shoe. Powered by 1 x CR2032 battery; includes case.