NavList:

Meanwhile in materials strapped Uk, chaps had to make do with following the reflection of a pea bulb attached to their MkIXs from a tailor’s mirror pivoted high on the wall of a darkened room and resting against a rotating slightly eccentric cam, which gave them about two degrees acceleration error effect to follow in their bubbles.  Moreover, this amazing invention could cope with six students at the same time in two rows of three.  In truth this device was unlikely to have been used for basic training, because this was done mainly in Canada and South Africa.  If used seriously at all, it was probably used to convince existing Navigators of the importance of always keeping the astral body inside the bubble if averaging was to be of any value.  I could photograph the remainder of the document, but I don’t want to affect the sales of a colleague who went to the trouble of retrieving it and printing it. DaveP

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