Standard nomenclature lists. F-234. Telescope, M31 (for 6″, 8″, 16″ barbette carriages and 90 mm A.A. gun mount T2E1), mount, telescope, M35 (for 6″, 8″, 16″ barbette carriages and 90 mm A.A. gun mount T2E1), list or all parts; June 17, 1943.