johnny250 Posted July 5, 2017 Report Share Posted July 5, 2017 (edited) I have a Blackwell Mk4 calculator if anyone needs one? 11 1/2" x 10" £20 posted UK john Edited July 5, 2017 by johnny250 Quote Link to post Share on other sites
iain Posted July 5, 2017 Report Share Posted July 5, 2017 Jonny you have a pm Iain Quote Link to post Share on other sites
TorontoTim Posted July 8, 2017 Report Share Posted July 8, 2017 I'm a speed-table man, but that looks interesting ... Quote Link to post Share on other sites
johnny250 Posted July 10, 2017 Author Report Share Posted July 10, 2017 Hi Tim, I do have another, but cannot find it at the moment!.....it's a slightly different model though. john Quote Link to post Share on other sites
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