I'd recommend getting a local machine shop to make one. I'm sure they'll do a
good job, and you can probably order one of whatever size you like.
/**************************************
"The four points of the compass be logic, knowledge, wisdom and the unknown.
Some do bow in that final direction. Others advance upon it. To bow before the
one is to lose sight of the three. I may submit to the unknown, but never to the
unknowable." ~~Roger Zelazny, in "Lord of Light"
***************************************/
________________________________
From: Jeff Loats <jeff.loats@gmail.com>
To: Forum for Physics Educators <phys-l@carnot.physics.buffalo.edu>
Sent: Wed, April 6, 2011 1:26:11 PM
Subject: [Phys-l] Off topic: Looking for a high quality Newton's cradle (for a
gift)
Hello all,
Our department owes thanks to an administrator and nothing says physics (to
the lay-person) like a Newton's cradle. We are looking for a high-quality
version that we can engrave or attach a little plaque to.
All of the ones I have found online are for less than $20 and I worry about
their quality for that price.