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Date: | Tue, 4 Dec 2007 21:05:28 -0500 |
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Allan -
Yes they do. We have tried to mount at various angles and typically at
least one of the axes has trouble. It is a bit tricky since sometimes it
will work with a user who applies pressure in one way, then with another
user it will skip.
quick Happ trackball question
Allan Ayres
to:
ISEN-ASTC-L
12/04/07 06:35 PM
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Informal Science Education Network <[log in to unmask]>
Please respond to Informal Science Education Network
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
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Is anyone aware of any issues with mounting a Happ trackball in an
inclined panel (say, 30 degrees from the horizontal)? Does the ball
sag down with gravity over time and eventually lose contact with the
rollers inside the trackball assembly?
If anyone can share any experiences one way or the other, that would
be a big help. Many thanks!
--
~~
Allan Ayres
Exhibit Developer
Lawrence Hall of Science
University of California, Berkeley
Berkeley, CA 94720-5200
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510-642-1254
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For information about the Association of Science-Technology Centers and the Informal Science Education Network please visit www.astc.org.
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