I think it must be the same book! I just went and looked, the distance is listed as 165m too. Same objects and sizes.
FYI, it's "The Amateur Astronomer" by Anton Rukl, Octopus Books Ltd 1979.
Cool! I didn't realise it was by Rukl, I've got his excellent "Moon Mars and Venus" maps book as well.
If you like I can scan the scope test page when I go back to work on Thursday.
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