[Therion] Making potractors

[Markus Boldt]

I have printed it on a normal paper-sheet and then laminated with a "normal"
Laminator by my work. This "thing" has worked for some years. But we have
not so much surveyings in our Region. Once I have to make it new. But no
problem - it is so simple to make it. BTW - many thanks for that utily! 
Now in the time of DistoX I have never used the protractor. 
Greetings 
Markus


-----Ursprüngliche Nachricht-----
Von: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] Im Auftrag
von Wookey
Gesendet: Freitag, 19. Juni 2015 13:33.
An: Therion List
Betreff: [Therion] Making potractors

What is the best way to make therion potractors?

Years ago Martin S sent me some really nice robust ones. Ones I have tried
to make since (by printing onto acetate and laminating the
result) do not work well because my laminating sheets only stick to
themselves, not the protractor material, so it opens up at the baseline and
delaminates.

Is it possible to print on one side of a laminating sheet then put two
sheets through the laminator to encapsulate, or will my laminating sheet
just melt in the laser printer? Maybe that could be done, but printed in a
(cold) inkjet printer, so long as no water ever got in? 

There is also the matter of the correct 'floppiness/stiffness'.
MartinS were nice and stiff (but robust). Laminator/acetate ones are rather
floppy.

So, how does everyone else do it?

Also http://therion.speleo.sk/protractor/index.php only links to a
1:200 protractor. It would be useful to keep others available there and save
people editing the metafont.

Ah-ha - turns out that we have 1:250 and 1:500 versions carefully preserved
on the CUCC site! 
http://expo.survex.com/templates/therion1_250.pdf
http://expo.survex.com/templates/therion1_500.pdf
And there are some US-units ones online. Collecting them would be a useful
little task.

Wookey
--
Principal hats:  Linaro, Debian, Wookware, ARM http://wookware.org/
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