Accession No

3902

Brief Description

polarimeter, by Franz Schmidt and Haensch, German, 2/2 19th Century

Origin

Germany; Berlin

Maker

Franz Schmidt and Haensch

Class

optical

Earliest Date

1850

Latest Date

1900

Inscription Date

Material

metal (brass, iron, oxidised brass, white metal); glass

Dimensions

length 536mm; height 375mm; breadth 210mm

Special Collection

Provenance

Purchased, 26/8/1992.

Inscription

‘Franz Schmidt & Haensch
Berlin
No 3539’ (top of stand)

Description Notes

Black-painted iron tripod base supporting turned brass column. Polarimeter mounted horizontally on top of column, can be rotated and moved up and down but not tilted. Main tube is black-painted white metal; hinges open to allow location sample tube inside. Pushfit objective; prism can be rotated by gearing operated from eye-end. Eye-end has two eyepieces, upper to allow comparison with original beam of light; both have pushfit eyepieces. White metal scale moves in a lateral plane between the eyepieces and the sample; divided 30 - 0 - [110], numbered by 10, subdivided to 1; Vernier gives reading to 0.1.

Condition good; complete.

References

Events