This vintage Aristo 4x5'' cold light source lamp head for darkroom photo printing is 5 1/2 x 4 1/2'' and it sits 5'' high. There are a couple of labels, scuffs, and scratches on its exterior (please see photos). When plugged in it turns on. There is no intensity control. There is only a single on/off switch that does not in fact turn it off/on. You can certainly use a darkroom timer to turn it on and off. Based on what this was acquired with we believe it to be part of the vintage way of creating ids and driver licenses.
