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They’re essentially strain gauges, with a nub. But I don’t think you can just convert one.

IBM invented them (I worked a tj Watson research where they had a display case dedicated to its development).

When I was a IBM I had a mouse with a nub, it was much better than the wheel for scrolling, but the concept didn’t take off...

They’re seem to be some on alibaba..!?

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"When I was a[t] IBM I had a mouse with a nub.."

I'ver never wanted anything so badly! Link to Alibaba?

The mouse doesn’t exist sadly.

I mentioned alibaba because have trackpoint keyboards though (seemingly in lots of 5). my reply wasn’t clear and lamentably too late to edit.

The mouse does exist, I had one.

Bing IBM SCROLLPOINT 12J3618

Thanks for the model number. I wonder how the driver support is.

I had one at a job too. I remember really liking it. So much better than the wheel. When I said they didn't exist, I meant I couldn't find one on alibaba.. I should reread my posts so they are clearer...

That sounds like the ScrollPoint mouse, which was made by both IBM and Lenovo. If it's not a current product, you might try eBay.

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