Accession No

2958

Brief Description

brass comparison spectrometer, by Hans Heele, German, 1900 (c)

Origin

Germany; Berlin

Maker

Heele, Hans

Class

optical

Earliest Date

1900

Latest Date

1900

Inscription Date

Material

glass; metal (brass, white metal, mercury [suspected])

Dimensions

minimum length 204mm

Special Collection

Provenance

Purchased from Tesseract, Hastings-on-Hudson, New York, USA, 05/1983.

Inscription

Hans Heele - Berlin

Description Notes

Comparison spectrometer - a form of direct-vision spectroscope displaying two spectra, one above the other, and a scale. Object end has mount for test tubes and housing for optics separating incoming light. Brass draw tube carries slit with brass jaws, width adjustable by milled ring. Inside is white metal casing for prisms. Side tube with scale on brass draw-tube, with scale, reflected to field of view. Illuminating mirror on pivoted screw.

Condition good

References

Events