Accession No

3895

Brief Description

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

Origin

Germany; Berlin

Maker

Franz Schmidt and Haensch

Class

optical

Earliest Date

1800

Latest Date

1900

Inscription Date

Material

metal (brass, white metal, oxidized brass, iron); glass; plastic

Dimensions

length 545mm; breadth 205mm; height 445mm

Special Collection

Provenance

Purchased from Auction Team Köln, D-5000 Köln 50, W. Germany; “Alte Technik” sale, cat. 721, 23/05/1992.

Inscription

‘Franz Schmidt & Haensch.
Berlin, S.
No 6237’ (on degree circle)

Description Notes

Polarimeter mounted on brass column, on iron tripod base. Truncated degree scale at objective end with lever which adjusts something inside the tube. Hinged cover for specimen holder, which contains a glass specimen tube with screw-fit cap. Eye-end with vertical degree circle divided 0 - [360] numbered by 10 subdivided to 15’. Degree circle rotated by knurled brass screw. 2 verniers read to 0.05’. 2 reading microscopes (with screw-fit eyepieces) move over the degree scale. Screw-fit eyepiece.

complete

References

Events