These prismatic binoculars are small and light but have no displacement of the objective lenses for stereographic rendition of the image. An inscription records that they were ‘MADE BY VOIGTLANDER & SON BRUNSWICK FOR LAWRENCE & MAYO LONDON’. It was the firm of Johann Voigtlander that re-introduced binoculars in the 1820s. In the 20th century, binoculars replaced the telescope as the main device used for making observations from ships.