Originally Posted by
Bill Burk
Don't you just turn the light on, spin the dial and set it to zero... Put your negative in place, and spin the dial until the light spot that you are adjusting matches what you can see of the negative? Then read the density off the dial. Best I can tell from pictures and what I assume of the operation, there should be two light bulbs, one in the base and one in the head... The one in the head shines through the yellow dial probably into a mirror that points up to your eye... While the light on the base has a straight path up to your eye (through your negative).
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