Chris Staecker @chrisstaecker.bsky.social · 11/10/2026Abacus roundup, with the usual suspects, plus a teaching model WITH ORIGINAL HANDLE 220
Chris Staecker @chrisstaecker.bsky.social · 11/10/2026Big hand-cranking music box with at least one spool 110
Chris Staecker @chrisstaecker.bsky.social · 11/10/2026Cool stopwatch with weird (to me) number arrangement. One time around is 30 seconds, so on the second time around you read the red numbers. 130
Chris Staecker @chrisstaecker.bsky.social · 11/10/2026Wolverine adding machine, always a familiar sight at these places 110
Chris Staecker @chrisstaecker.bsky.social · 11/10/2026Flea Report from Recollective in Bridgeport. 🧵 Very fancy NCR in excellent shape 10/10 did not buy 150
Chris Staecker @chrisstaecker.bsky.social · 02/10/2026busy, but I can't think how to do it better 220
Chris Staecker @chrisstaecker.bsky.social · 28/09/2026Old US Navy sextant at “Mantiques” shop in the adirondacks. 10/10 did not buy 061
Chris Staecker @chrisstaecker.bsky.social · 19/09/2026Old school magnetic tape, right across from desktop PCs with LCDs 070
Chris Staecker @chrisstaecker.bsky.social · 08/09/2026RIP Mister Matt 🙁 I talked to him on the phone once- he was proud of his paper computer. I thought it was cool too. 172
Chris Staecker @chrisstaecker.bsky.social · 02/09/2026Spotted at an estate sale. Mathematicians may now discuss 5244
Chris Staecker @chrisstaecker.bsky.social · 31/08/2026Nice shiny NCR-type #mathprop in Final Fantasy 7 Rebirth 1140
Chris Staecker @chrisstaecker.bsky.social · 22/08/2026I actually redrew that one! Is this more or less compelling? (it's the same graph) 100
Chris Staecker @chrisstaecker.bsky.social · 04/08/2026dumbest-ever news article units conversion 2110
Chris Staecker @chrisstaecker.bsky.social · 03/08/2026Bad news- the torus diagram that took me forever to draw has been replaced with this one, which is a far better and simpler example of what I was trying to demonstrate before. The cooler looking example is not always the best one. 140
Chris Staecker @chrisstaecker.bsky.social · 02/08/2026Hah- I had to check and unfortunately the graph "F?kit" is not too interesting as a digital topological object. (Homotopy-equivalent to a single point.) 000
Chris Staecker @chrisstaecker.bsky.social · 02/08/2026there's more like this but you get the idea 260
Chris Staecker @chrisstaecker.bsky.social · 01/08/2026this one took forever and i'm still not totally pleased with it but it'll do 4131
Chris Staecker @chrisstaecker.bsky.social · 01/08/2026Yard sale find: the Doodle Dome! A spherical etch-a-sketch 1213
