23-10-2018, 08:05 AM
(23-10-2018, 07:52 AM)Charles Levien Wrote: Jon, if memory serves me right I think it’s a 25d
Thanks Charles. I think on balance I'd (fussily) not want a vacuum thing showing.. but (thinks...) I wonder whether there was a precursor to it without? I imagine not, otherwise they would be well known! Good to know though.