[ebay] Unicomp Buckling Spring with Trackball USED $55

[morpheus]

I'd pick this up if I didn't already have a Model M....

http://www.ebay.com/itm/New-Vintage-Unicomp-96U1114-Model-M5-2-PS-2-Keyboard-Trackball-Mouse-/190901403243?pt=PCA_Mice_Trackballs&hash=item2c729c3e6b

[MTManiac]

that's going to go fast

anyone know the dpi options on the trackball?

[dorkvader]

that's going to go fast

anyone know the dpi options on the trackball?

8200 cpi if you have this:
http://geekhack.org/index.php?topic=44411.0
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The actual encoder it's using likely is optomechnical, and cpi is not as useful a measure on a trackball as counts per rotation or counts per degree.

[elttaboi]

Would this be equal in build quality as a Model M of the same year?

[dorkvader]

Would this be equal in build quality as a Model M of the same year?

Yes.

But that's because it IS a "model M of the same year." You are asking if a Unicomp will have the same build quality as a Unicomp. You can deduce that they will (by definition).

The plate will be thinner than a model M of the late 1980's, the case is likely slightly different plastic. See all the articles meticulously cataloging the differences in the Model M keyboard throughout time.

[JWK]

That's not buckling spring -- it's rubber dome (quiet touch).  For reference, see:
http://pckeyboard.com/page/product/96U1114
http://www.clickykeyboards.com/index.cfm/fa/items.main/parentcat/9243/subcatid/0/id/126291

[Computer-Lab in Basement]

^This. I made that mistake once.