They are also quite deceptively large; about 7' along the t/e span and maybe 5 1/2' along the root chord, tapering to about 2 1/2' at full span, not forgetting another 12" of spigot (about 2" dia) from the centre of the root into the fuselage.
Mostly Harmless mentions its heavy, which it is, 3 man lift for safety because of its bulk, but also because the weight always seemed to be at the root and the l/e tip where there were some big lead weights.