A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Ronald van Riet
Date: 2016 Sep 7, 04:53 -0700
I don't want to spoil any fun, but how long does a solar calculator last at night?
Re: Casio FX-300ES vs FX-300ES Plus: which one to prefer?
From: Frank Reed
Date: 2016 Sep 6, 12:13 -0700
I recommend the Casio fx-260 solar. No batteries, standard "scientific calculator" capabilities (in other words, trig functions, logs, etc.), very cheap, and above all widely available. It also happens to be water resistant. I've dunked a few in saltwater to see how they recover. In fact, they float fairly well at first, but even when they sink, after drying out they work just fine. I have yet to see one of these calculators fail.