unclebobmartin @unclebobmartin - 1y
Do you know how to use a slide rule? This is my father’s from long, long ago. https://image.nostr.build/e26254f8d00843f07125abcb3d9e3aaf0a1d751504e2fe6e7b4cc67d51261771.jpg
Samuel #BTC @bitcoinstr - 1y
#mathstr #photostr #bitcoinstr I did at one point but have forgotten. However I still have the book. https://image.nostr.build/79811f421a6b30185c595dfaed55559d85a3cdceecbf930ab4cb76256774979b.jpg https://image.nostr.build/70b6f8eb6c69d58cdd1d1b7e066c0eabc0f16d8be65601fae9c16749adb76401.jpg https://image.nostr.build/7bef11c47abbc4fe39f93c79eaf42585d7417ead8af9cf5de64cfd6501e4fce2.jpg
node @node - 1y
I think my dad had one. I forget how to use it though
