A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Randall Morrow
Date: 2011 Dec 1, 14:10 -0800
Alan, you wrote:
"In any case, re the mirror that you used, did you happen to get "optically flat mirror glass", or did you just get lucky with an ordinary piece of mirror glass. I believe the mirror you used is considerably larger than the one I have."
I purchased a first surface mirror from Alpine
Glass, and they cut it to my 6 x 6 inch size request. The charge
was $16.00 plus shipping. This size was cut by them from a 12 x
16 sheet that normally sells for $65.95. (item # 25KFSM) (I guess
4 people could buy a whole sheet and cut it into 4 6 x 6 pieces.) The mirror
is very clear and flat from edge to edge with no distortion at all, but
it did not specify "optically flat". They sell these mirrors
for craft projects like kaleidoscopes. Their web site is http://www.alpineglass.com
The web site shows the full sheet price and it took e-mail
contact to arrange to get a fraction of a sheet cut to size.
The service was excellent and delivery fast.
Randall F Morrow PT
Ergonomics Safety Consultant
Chronic Pain Program
Kaiser Permanente - Kern County - Bakersfield
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