Offri un caffè a vbbsmyt

I just like finding out how some mechanisms work - turn-of-the-last-century guns, torpedoes, artillery and lately, early submarines. I am retired, and work alone in my study, using some quite good software on my ageing iMac. Self taught, which means I probably don’t use the software properly, but hey! it works for me. The research, I think, keeps the little grey brain cells working in my old age. If you like my work, please buy me a coffee (or a cup of tea). (£5/$5 or less) Rob