The Allen-Schoitz Tonometer is a precision ophthalmic instrument designed for evaluating scleral rigidity and assessing the resistance of the eye’s outer coat (sclera) to stretching. Widely utilized in various ophthalmologic examinations and research applications, the device provides reliable measurements to support accurate ocular assessment. The complete set includes three interchangeable weights (5.5 g, 7.5 g, and 10.0 g), along with a plunger, footplate, and test block. Its atraumatic footplate ensures gentle contact with the eye, while the different weight options allow for precise measurement of ocular resistance and biomechanical properties. Engineered for accuracy and consistency, the Allen-Schoitz Tonometer remains a valuable tool in comprehensive ophthalmic evaluation.