WF AUTOMACAO - KITS EDUCACIONAIS NACIONAIS wrote:
>
> Hi,
>
>         Does someone know if there is some equipment that measures the
> speed of a car, using a SONAR? (The manucfacturer, please)!
>
>         Miguel

I haven't got a particular manufacturer in mind, but
this picture was taken with the help of piezo-electric
co-axial cable :

http://www.wasp.co.za/~tjaart/aargh.html

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