that should work, unless you're talking the lot-size ones which are flagged for the ground. if you just mean the waist-high one, you should submit a bug report.
OK, good info, that's what I'll do. Yes, it is the waste high one which would place INSIDE the house, but not up on the flat roof. Thanks for your response.
I always wanted to put a crafted moondial on top of a crafted fountain but I'm not allowed because of some silly rule that moondials cannot be placed on anything other than the floor.