Split Horizon Replacement Mirror Package includes traditional split-view horizon mirror, as well as index mirror, screws and springs. $   ...item# 1840dm
View video on how to replace mirror on your plastic sextant. This item is for those who own a Mark 25 sextant, which comes with a "full horizon" mirror, who soon discover that this mirror style has more draw backs than advantages, and so decide they want to change it to the traditional, split-view, mirror.