Spacing ring S, d=66 x 57 mm elongates the diam. 66 mm objective barrel by 57 mm, e.g. for mounting of dark-field ring illuminator on Discovery objective Plan 1x or Plan Apo 0.63x or twice used on Achromat 0.5x
Теги: Spacing ring S, d=66 x 57 mm, 435448-0000-000, Zeiss, Various lamp accessories