(no subject)

[gfish]

Completely unrelated: Does anyone know the official name of those old physical map devices that displayed the current solar terminator? Maybe it's just the extreme sleepdep, but my Google-fu is failing me utterly. Mostly I just want to know how unaffordable a used one would be.

Edit: They're called Geochrons. Thanks go to Internet Braintrust rep hollyking.

Comments

[shadowblue.livejournal.com]

I might be able to find it with a better description. I've never seen non-electronic devices that displayed the terminator.