Do a search for "Tact switch"... lots of people make these sort of switches. 
We use Omron on a couple products. A company named Mountain makes them too I 
think - there are many others. Digikey probably has something.

Hope this helps

-- Mark

-----Original Message-----
From: "Roger Weichert" <rweicher@bigpond.net.au>
To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Date: Tue, 29 Dec 2009 09:00:33 +1030
Subject: [EE] ID Switch Manufacturer

> Hi Guys,
> 
> I am after some of the 'momentary on' switches shown in the pix at this
> spot 
> ...   http://bayimg.com/GajOPAaCD
> 
> If someone recognises the manufacturer or could tell me where to obtain
> some
> replacements (in Australia if possible) I would be grateful, thankyou.
> 
> The body of the switch is 12mm square by 4mm thick, with the switch
> actuator
> an extra 1mm higher.
> 
> Regards, Roger 
> 
> -- 
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