A method of adjusting a uterine manipulator includes inserting a shaft of the uterine manipulator into a cervix, moving a colpotomizer sleeve of the uterine manipulator to a predetermined position along the shaft such that the cervix is received within a colpotomizer cup attached to the colpotomizer sleeve, depressing a rotatable locking member of the colpotomizer sleeve towards the shaft, confirming that the colpotomizer sleeve is accurately located at the predetermined position by visualizing a ruler marking of a plurality of ruler markings printed along the shaft using a magnification lens of the rotatable locking member, and compressing the shaft with the rotatable locking member of the colpotomizer sleeve to lock the colpotomizer sleeve at the predetermined position.
