"Norman D. Crow" wrote in
:


"R.H." wrote in message
. ..
This week's set has been posted:

http://puzzlephotos.blogspot.com/


422 Early model pocket watch? Looks like a small portable sundial
with a built in compass and sticks to adjust tilt of tables for time
of year.

This one is very interesting. At first I thought it was perhaps
for navigation (align it N-S using the compass, and then somehow
use the tilting sundials for determining latitude). But I think
it's probably not for serious navigation. I beleive it's used
somehow in Feng Shui to determine the proper alignment of things.

John