The Luedde Exophthalmometer is placed on the lateral orbital wall and is used to measure the protrusion of the eye through its transparent ruler. The Endocrine Society Leudde Exophthalmometer measures 3 3/8” long by 3/8” wide and comes with a protective leather storage sleeve and easy-cleaning instructions. Engraved with the Endocrine Society logo and millimeter measurement markings, this device is a must-have for any Endocrinologist.