Accession No

1618

Brief Description

reflecting objective lens, by R. and J. Beck Ltd., English, 1940 (c)

Origin

England; London

Maker

R. and J. Beck Ltd.

Class

optical

Earliest Date

1940

Latest Date

1940

Inscription Date

Material

metal (steel)

Dimensions

diameter 47mm; thickness 31mm

Special Collection

Provenance

Donated by Ealing Beck Ltd. in 09/1971.

Inscription

‘4 mm’

Description Notes

High powered objective for dark field incident illuminator; 4 mm focus; steel mount with knurled rings; dove tailed shoe.

References

Events