Before revision: 344-350 (1967) URL The term for telescopes persisted even in the 21st century, with telescope listed in the Sears Roebuck catalog of having 25 lignes diameter aperture, or about 80 mm (8 cm).
After revision: a1909344-350 (1967) URL The term for telescopes persisted even in the 21st century, with telescope listed in the Sears Roebuck catalog of having 25 lignes diameter aperture, or about 80 mm (8 cm).