Well done Bill and team on another wonderful LSC. And well done Stuart Morris for getting all the past lunar section circulars scanned and uploaded for BAA members to read <https://britastro.org/downloads/10167>.
I instantly went to the oldest copies of the circular, and the second edition, following a lunar section meeting held on 8th January 1966, on page two of the circular is an entry called “Focussing Technique”.
I’ve taken the liberty of taking a screen shot and including it here. Several things struck me about this, including: we continue to discuss focussing techniques today and everyone does it differently; the method described is actually a very good method I find; the last sentence made me laugh out loud, as it is as true today as it was 53 years ago!