Not sure if it was AIA (Arch. Institute of America) that you got them
from...or if they even sell them any more.  But here are some links for
others, not quite the same, but...

http://www.geosociety.org/bookstore/default.asp?oID=0&catID=4&pID=PTS002

http://www.tritechusa.com/evidence/PSA.htm



At 08:37 PM 9/13/2004 +0200, Michiel Bartels wrote:
>Dear List,
>
>A long time ago, I speak of 3, 4 years, someone posted the address were one
>could buy these nice 10 cm long black and white chequered flexible plastic
>measuring rods for adding to your photo. I believe it was in Texas or so.
>The system was that you send a dollar and they return the measure. These
>things were very useful, but now we lost them all in the process.
>
>Could anyone tell me were I can still buy these things?
>
>Many thanks,
>
>Michiel Bartels
>Deventer NL
>
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