i picked this up a while ago in a market, just wondering if anyone knew what it was. it seems to be some sort of a light meter as well as white balance meter, the two circular thinkgs with wires cm/em seem like where the light is recorded. the dial reacts when i move them around. it still works. just wondering if anyone knew what it was used for. the date on the front of it says 1966.
thanks
Donal
Bit of googling seems to show that its for use with microscopes and photography using them.
Have a look here. There is a schematic of a version of it in use with a series of microscopes.