Accession No

3241

Brief Description

five-inch portrait lens, by Thomas Grubb, Irish, mid-19th Century

Origin

Ireland; Dublin

Maker

Grubb, Thomas

Class

optical

Earliest Date

1838

Latest Date

1878

Inscription Date

Material

glass; metal (brass)

Dimensions

length 435 mm; diameter 190mm

Special Collection

Provenance

Transferred from Institute of Astronomy, University of Cambridge, Cambridge, England, 08/1985.

Inscription

‘No. 531.
Grubb.
Dublin.’

Description Notes

large brass cylinder containing lens with cloth covered cap on one end. Slits in the side of the tube near the eyepiece and halfway down, for admission of the aperture plate.

Condition good; complete.

References

Events