It’s pricy, but I love the 3dconnexion CAD mouse [1]. It tracks superbly, and the construction quality approaches Apple’s level. 

[1] https://3dconnexion.com/us/cadmouse/

> 
> On Jan 27, 2022, at 8:57 PM, Kurt H Maier via 9fans <9fans@9fans.net> wrote:
> 
> On Fri, Jan 28, 2022 at 03:47:48PM +1100, Rob Pike wrote:
>> I have one mouse still in the original unopened box, just to be safe. The
>> label reads
>> 
>> 31P7405 Lenovo Scrollpoint Mouse Model MO098OA
>> 
>> And I have now opened it to be sure, and it is the true blue (literally)
>> 3-button version. It is labeled Lenovo, although the ones I use are all
>> labeled IBM.
>> 
>> -rob
> 
> Lenovo wasn't as much of a stickler for nomenclature as IBM; I ran into
> all kinds of label variants -- when I worked at IBM I used to snag these
> when I could.  They were also labeled 'ThinkPlus Optical Mouse' for a
> while, when bundled with a computer.  Useful information for keeping
> them alive can be found here:  http://www.ibmfiles.com/pages/scrollpoint.htm
> 
> khm
> 

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