@Sarge: Yes, it's the pic. Well, if you look at the 2nd pic you've posted, the small Naiskos could be triple in the volume of a combadge. There you've got a idea of how big those figures are. 10 are possibly in a big Naiskos, the second pic show only nine, if I haven't miscounted and the FF has 10 drawn in. So you work up to the height and width.
Michael Parrish also shown a inofficial Naiskos from the experience - practically you can do your Naiskos as you wish - it could be passed as a 1st or 2nd dynasty Naiskos or later ones, like what Michael did. This Naiskos represents only the work of the famous nameless Master of Tarquin Hill as stated in the episode. AFAIR, the small ones didn't open. Rick Sternbach designed the Naiskos, he may have all your answers.
Oh yes, before I forget the Interactive Tech Manual has 2 pics of the Naiskos in the Ready Room, the closed and opened one.