Aberdeenshire Museums Service's Collections | Details

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Actions	octant Remove from selection Add to selection Object numberP4697 Titleoctant Creator William Sloman Gregory (maker)‎ DescriptionOctant by William Sloman Gregory of London. Mahogany frame, index arm missing. The ivory scale or vernier is graduated. In the center of the octant on an ivory plaque is inscribed in script 'William Sloman Gregory London.' The top horizon mirror (missing) is on an adjustable turntable and can be rotated by by loosening a screw which locks the mirror's position. The lower mirror and peep sight are used for taking back sights, and were only fitted to very early octants. Mid to late 18th century Production placeLondon Production date 1750 - 1792 Object nameoctant Materialwood Dimensions length: 43.5 cm diameter: 34.0 cm

Object numberP4697

Titleoctant

DescriptionOctant by William Sloman Gregory of London. Mahogany frame, index arm missing. The ivory scale or vernier is graduated. In the center of the octant on an ivory plaque is inscribed in script 'William Sloman Gregory London.' The top horizon mirror (missing) is on an adjustable turntable and can be rotated by by loosening a screw which locks the mirror's position. The lower mirror and peep sight are used for taking back sights, and were only fitted to very early octants. Mid to late 18th century

Production placeLondon

Production date 1750 - 1792

Object nameoctant

Materialwood

Dimensions

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