Keratome with miniature differential micrometer

摘要

A keratome includes a miniature differential micrometer having a barrel, a middle sleeve, and a inner sleeve connected by a threaded shaft having threads of two different pitches. One end of each of the middle sleeve and inner sleeve is drilled and tapped undersize and is slotted to conform resiliently to the threaded shaft. The middle sleeve is attached to a keratome by set screws drawing the middle sleeve into tight contact with the body of the keratome. The adjustable plate in the keratome is attached to the inner sleeve.