Masons present their teachings through symbols and rituals, which they feel presents more of an overall gestaltische absorption than mere words. The symbols are visual illustrations of the basic precepts, called “emblamata.” From several online sources I have deduced the 33 main symbols. Twenty-seven of these may be found in Pale Fire. What are the chances of that?!
(Not found are: Keystone, Acacia sprig, Trestle Board, Anchor, Ark, Pavement, gavel, 24” Gauge, Tyler’s Sword)