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From: bleck@ai.mit.edu (Olaf Bleck)
Newsgroups: comp.robotics
Subject: Re: Getting narrow-beam range data
Message-ID: <16462@life.ai.mit.edu>
Date: 12 Jun 91 22:16:17 GMT
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Sender: news@ai.mit.edu
Organization: MIT Artificial Intelligence Laboratory
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I have this thing made by a company called Calculated Industries, the
Dimension Master Plus (TM) Tapeless Measure/Calculator that's designed
for architects I think.  It has a phased array of three sonar actuators
(they're 1inch diameter), and it advertises roughly a 3deg.  beamwidth,
which is believable based on playing with it.  Good resolution too--it
gives millimeters...not that anyone would care.

I don't know how we got it or where, so don't ask, but it probably cost
a few hundred $$$.  Dimensions are about 3"x6"x1", weighs less than a
pound with batteries.




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_________________________________________________________________
Olaf Bleck					bleck@ai.mit.edu
Research Scientist				617-253-0997
MIT Artificial Intelligence Lab
Mobile Robotics Group