Accession No

2398

Brief Description

slateboard (mariner’s), 1700-1800 (c)

Origin

Maker

Class

navigation

Earliest Date

1700

Latest Date

1800

Inscription Date

Material

stone (slate); wood

Dimensions

length 862mm; breadth 338mm

Special Collection

Provenance

Purchased from Sotheby’s, London; lot 20, 15/12/1978. Purchased with the assistance of grant-in-aid from fund administered by Science Museum, London.

Inscription

‘Type of the Moon’s Place’ (both sides)

Description Notes

Large slate pro-forma for calculation of longitude by lunars. Presumably didactic function. Engraved with columns on both sides, both sides headed: ‘Type of the Moon’s Place’. Two holes for mounting. Broken. Bought in soft wood frame (now missing).

References

Events