Yet I lacked in my collection of all possible instruments: an illumination meter. The device makes a very good impression for ~ 15. Housing processed very well, no burrs or uneven gaps, all made very accurately. It shows when you lose weight or it puts the cap of the "eye" that goes nicely sucking on it or down. The keys go well and sit precisely in the openings. Beautifully also the display, large and easy to read. It turns the unit on and it immediately begins to measure, range conversion is done automatically - reading a manual can save. I can about the absolute accuracy currently can not make, but for comparing brightness values together it works well before. I have first used in order to compare a bunch of used fluorescent tubes together and weed out the impoverished.
