Accession No

2348

Brief Description

universal altitude dial with orthographic projection, English, 1628

Origin

England

Maker

Class

astronomy; dials

Earliest Date

1628

Latest Date

1628

Inscription Date

Material

metal (brass)

Dimensions

length 121mm; diameter 98mm

Special Collection

Provenance

Bequeathed by R.S. Newall, 17/10/1978.

Inscription

‘1628’ ((?) on smaller circle)

Description Notes

Circular brass plate with degree scale around the edge divided [0] - 90˚ - [0], 90˚ - [0] - 90˚, numbered by 10˚, subdivided to 1˚; also marked ‘abcdefg’ 5 times over one half. Rojas projection. Hour arcs divided 1 - 12, 1 - 12, numbered by 1. Calendar scale marked by zodiac symbol. Diametric index arm divided [0] - 90˚ twice, numbered by 10˚. (Spiral scale above, 1-19 on inner scale, by 1; 1-33, by 3, every third number, but irregular, on outer scale; 31-1-2000).

Condition: fair.

References

Events