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Regarding compasses, have you considered going the other direction? A pin and a piece of string won't be sturdy, but are cheap enough that regular replacement wouldn't be an issue. 

-----Original Message-----
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this is an odd one, but does anyone have a source for decent, sturdy compasses (the drawing/drafting kind, not the directional kind). We do a program that uses them every summer, and they are destroyed by the end of it. Someone out there must make a halfway decent one for a somewhat reasonable amount..?


thanks all,
AD

~~~~~~~~~~~~~~~
Alissa Daniels, Science Program Manager
Boston Children's Museum
617 426 6500 .342
"The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That's funny..."  " --Isaac Asimov ~~~~~~~~~~~~~~~

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