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Old 17th Apr 2019, 09:55
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Pontius Navigator
I don't own this space under my name. I should have leased it while I still could
Join Date: Dec 2002
Location: Lincolnshire
Age: 76
Posts: 16,622
Originally Posted by Hydromet View Post
Had a maths teacher in high school, former WWII nav, who used to do the same thing. We thought he was extremely clever until someone spotted him drawing a circle on the board in pencil, using a blackboard compass, before the lesson.
No, this was pure technique.

He stood with his back to the board, piece of chalk in hand, and then turned around describing the circle as he turned.

However, like your nav, we had one that would draw the block schematic in the board, rub it out before we came, and then redraw it during the lesson. In theory we were remembering the diagram and telling him what came next. In practise we were reading the board.
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