Mr Twat here:
I oh so carefully marked 75mm graduations up my steel post and made a jig. The footings 4 courses came out a treat with a lovely 10mm mortar gap between each.
Then not thinking, tired, rushing, whatever I went wrong putting muck on a welded support angle when there should have been none. Threw everything out and I missed the chance to correct it.
Abandoned the jig thereafter and did the rest by eye.
Trouble is I'm starting the other pillar tomorrow. If I do it "better" will it stand out? ?