By Optical Heritage Museum Staff

The AO Lensometer provided a quick and accurate means to verify the power of an eyeglass lens and due to the affordability and ability to mass produce, revolutionized the Ophthalmic lens industry. AO’s chief scientists Dr. Edgar Tillyer and Dr. Estelle Glancy were intimately involved in the engineering effort of this device, which took over 10 years to perfect. Due to this impact on the optical industry, the ASME History & Heritage Committee deemed the AO Lensometer worthy of receiving landmark status.

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