Catalogue Number: 3867
Welch Allyn retinoscope Model 18000
Corporation: Welch Allyn
Year Of Publication/Manufacture: c1980
Time Period: 1940 to 1999
Place Of Publication/Manufacture: USA
Publisher/Manufacturer: Welch Allyn
Description Of Item: Welch Allyn spot retinoscope Model 18000. Chromed metal battery handle, black plastic head marked 'WELCH ALLYN U.S.A.' Mount labelled 'MODEL 18000/ PATS. PEND./U.S.A./HALOGEN'. Size; 240mm L x 42mm W x 30mm D.
Historical Significance: In 1959 Welch Allyn were the first company to use rechargeable batteries within diagnostic instruments. In 1973 the company became the first company to develop and use subminiature halogen lamps for medical diagnostic equipment. Halogen improved the intensity of the light and gave a better colour temperature for diagnosis.
How Acquired: Donated by Margaret Banks
Date Acquired: October 2019
Location: Archive Office. Cabinet One Drawer 7