otis used these 17ct, 22ct, and 29ct machines from the early 70's on through the early 90's it replaced to #1 and #2 machines. then they went with the 18atf which is a good machine but a throw away gear box. which we don't make anymore, oops. nowadays everybody has gone gearless and they are working on a gen2 mod machine which will replace most smaller geared machines. everything else we just buy hollister-whitney.
