Accession No
1216
Brief Description
perpendicular for gunnery, by George Adams, English, 3/4 18th Century
Origin
England; London
Maker
Adams, George
Class
military
Earliest Date
1750
Latest Date
1775
Inscription Date
Material
metal (brass, steel); glass
Dimensions
height 118m; breadth 94mm; depth 18mm
Special Collection
Provenance
Purchased from A.S. Jones, Bournemouth, England in the 1950s.
Inscription
‘G Adams London‘ (on front)
Description Notes
Brass plate with concave base and two steel-tipped feet carries brass level and steel rod with pointed lower end sliding in groove in centre of plate.
Condition good; complete
References
Events
Description
This instrument was used to scribe a centre line on a cannon by running it along the top of the cannon while keeping it level from side to side. This centre line then permitted accurate placement of a gunner’s quadrant to adjust the height of the piece and therefore the range of fire.
FM:39528
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