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Bristol Fighter with Leitner-Watts adjustable pitch airscrew
I believe these were early, and experimental, ground adjustable airscrews.
I have seen a photo in Windsock Pub, Bristol Fighter Vol2, P.16 top, in 1925 and have just obtained another image with the same airscrew taken at approx the same date.
Wondering how many of these airscrews were actually fitted, presumably experimentally, to RAF Bristol Fighters in the early 1920s.
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