H Everyone, this is a Luna Sphere attachment for the Gossen LunaPro SBC, and (possibly - check) the Multi-Pro and Ultra Pro and Mastersix. I only occasionally used it with my SBC. It automatically corrects the reading, so all you need to do is plug it in and read off the dial the normal way. I found that I did not take it in the field because I occasionally switch from reflected to incident reading. The Luna Sphere comes with a footcandle dial (see the picture). It will NOT work with any of the older CDS meters.
From the LunaPro SBC manual: "When working in the studio or with multiple sources of light, many professionals prefer to measure incident light for exposure determination. This can be done with the basic Lune-Pro sbc, but for greater convenience, the Luna-Sphere combines its large integrating sphere with a 360 swivel head plus capability for a flat plane diffuser into one convenient accessory."
It's hard to guess what to charge. Would $35.00 be all right including 1st class shipping to a USA address? ∏lease send a private message and I can send a PayPal address.