Accession No

1523

Brief Description

compound microscope, polarising, possibly achromatic, by J. G. Hofmann, French, 1875 (c)

Origin

France; Paris; Rue de Buci 3

Maker

Hofmann, J. G.

Class

microscopes

Earliest Date

1875

Latest Date

1875

Inscription Date

Material

metal (brass, silver); glass

Dimensions

height 405 mm; depth 180 mm; breadth 157 mm

Special Collection

Provenance

Transfer from the Department of Mineralogy & Petrology, University of Cambridge.

Inscription

‘POLARI MICROSCOPE. Par J.G. Hofmann Rue de Buci, 3, Paris’

Description Notes

Brass; claw foot; turned brass column swinging concave mirror screwed to the base of the column; brass collar with graduated flange 90-0-90 by 45 screw fit condenser in top; [push fit] polariser in bottom; (not usual form, but with 2 lenses one possibly selernite); racked triangular column with 2 coarse focus screws either side; on a triangular column with 2 coarse focus screws either side; on a bar from the racked column a series of lenses push fit in collar; polarising eyepiece in push fit collar with index to silvered dial graduated 0-180-0 by 10 to 1; slot below dial.

References

Events