Egg size of Cal eggs

[Will]

I am going to start building an incubator pretty soon, and during these planning stages, I came across a question:

How big are Cal King eggs...? I've seen Cali eggs before, but now that I go to figure out how big I need to build, I can't remember how big they are. I seem to remember "Ping Pong ball sized", but my mind is known to play tricks on me. How big are they in comparison to other common objects...?

[Tim_Cranwill]

Close. Take a ping pong ball, add 20-30% volume and roll it in your hand to make it more of an oval.... that would be "about" right... Some are bigger and some are smaller of course.