Accession No

4444

Brief Description

diaphragms, 1875-1925 (c)

Origin

Maker

Class

optical

Earliest Date

1875

Latest Date

1925

Inscription Date

Material

metal (brass)

Dimensions

height 74mm; breadth 48mm

Special Collection

Provenance

Transferred from the Institute of Astronomy, University of Cambridge, in 1988.

Inscription

‘2’ (on back of one)

Description Notes

Two diaphragms made of brass, with apertures of 35 and 40mm. One is stamped with the number 2 on the back.

Condition: fine; complete.

References

Events