An armillary sphere can be used in either hemisphere. The only issue is that the hour numbers, if written with their base lines along the equatorial ring, will be upside down, but you could provide numbers facing both ways, one set either side of the centre of the hour band. Or, you could turn the numerals 90 degrees or even, as I did for an equatorial dial I made for Singapore, use non-numeric pips, as on playing cards, that can be read either way up.
Chris ----- Original Message ----- From: David Bell To: [email protected] Cc: <[email protected]> Sent: Thursday, July 28, 2011 12:33 AM Subject: Re: Longitudinal shift, another way Create a uniquely crafted armillary sphere for your friend! It could pack in a table lamp sized box for those many moves. It can be truly universal and can be installed and adjusted for any location. The only tricky part would be if they were to be stationed on the southern hemisphere. You'd need to include two hour rings... Dave
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