Short answers, pulled from the story.
Six Polish machines called bombas were delivered to the Biuro Szyfrów in November 1938. Cryptologist Marian Rejewski had spent seven years breaking German Enigma messages before these devices arrived.
Alan Turing designed the British bombe on a principle assuming text presence known as cribs. The first machine named Victory was installed in Hut 1 on the 18th of March 1940.
A standard British bombe contained thirty-six Enigma equivalents with three drums each. Each drum had one hundred four wire brushes making contact with terminals on templates.
May 1945 marked one hundred fifty-five operational units. About two hundred bombes existed ultimately before production ended.
Production stopped in September 1944 after one hundred twenty one units made. The fast drum rotated at one thousand seven hundred twenty five rpm.