Need to identify an incubator

I've been given an incubator. The person has no idea what kind it is or how to operate it. I'm happy to research the latter, but I need to know what kind it is first.

It is made of hard gray plastic, and is round, a bit bigger in diameter than an LP. There is a black, plastic grid that fits into the bottom, and over that something that looks like a spoked wheel. In the center column is a chandelier light. On the base, below the gray tub, is what looks like a cam, and judging by the placement of some ridges on the underside of the gray tub, it looks like it would partly turn the tub back and forth. Covering the top is a clear, plastic top with 4 holes, 3 of which have little red covers.

I'm not sure if that is enough of a description, but if you know what it is, I'd appreciate the information. Additionally, any information as to its reliability, ease of use, and any tips or tricks would also be appreciated. Btw, do I need to get another little red cover for the fourth open hole?

Cheers